static av_cold int decode_init(AVCodecContext *avctx)
{
AnsiContext *s = avctx->priv_data;
avctx->pix_fmt = AV_PIX_FMT_PAL8;
s->frame = av_frame_alloc();
if (!s->frame)
return AVERROR(ENOMEM);
/* defaults */
s->font = avpriv_vga16_font;
s->font_height = 16;
s->fg = DEFAULT_FG_COLOR;
s->bg = DEFAULT_BG_COLOR;
if (!avctx->width || !avctx->height) {
int ret = ff_set_dimensions(avctx, 80 << 3, 25 << 4);
if (ret < 0)
return ret;
} else if (avctx->width % FONT_WIDTH || avctx->height % s->font_height) {
av_log(avctx, AV_LOG_ERROR, "Invalid dimensions %d %d\n", avctx->width, avctx->height);
return AVERROR(EINVAL);
}
return 0;
}
static int ffmal_update_format(AVCodecContext *avctx)
{
MMALDecodeContext *ctx = avctx->priv_data;
MMAL_STATUS_T status;
int ret = 0;
MMAL_COMPONENT_T *decoder = ctx->decoder;
MMAL_ES_FORMAT_T *format_out = decoder->output[0]->format;
ffmmal_poolref_unref(ctx->pool_out);
if (!(ctx->pool_out = av_mallocz(sizeof(*ctx->pool_out)))) {
ret = AVERROR(ENOMEM);
goto fail;
}
ctx->pool_out->refcount = 1;
if (!format_out)
goto fail;
if ((status = mmal_port_parameter_set_uint32(decoder->output[0], MMAL_PARAMETER_EXTRA_BUFFERS, ctx->extra_buffers)))
goto fail;
if ((status = mmal_port_parameter_set_boolean(decoder->output[0], MMAL_PARAMETER_VIDEO_INTERPOLATE_TIMESTAMPS, 0)))
goto fail;
if (avctx->pix_fmt == AV_PIX_FMT_MMAL) {
format_out->encoding = MMAL_ENCODING_OPAQUE;
} else {
format_out->encoding_variant = format_out->encoding = MMAL_ENCODING_I420;
}
if ((status = mmal_port_format_commit(decoder->output[0])))
goto fail;
if ((ret = ff_set_dimensions(avctx, format_out->es->video.crop.x + format_out->es->video.crop.width,
format_out->es->video.crop.y + format_out->es->video.crop.height)) < 0)
goto fail;
if (format_out->es->video.par.num && format_out->es->video.par.den) {
avctx->sample_aspect_ratio.num = format_out->es->video.par.num;
avctx->sample_aspect_ratio.den = format_out->es->video.par.den;
}
avctx->colorspace = ffmmal_csp_to_av_csp(format_out->es->video.color_space);
decoder->output[0]->buffer_size =
FFMAX(decoder->output[0]->buffer_size_min, decoder->output[0]->buffer_size_recommended);
decoder->output[0]->buffer_num =
FFMAX(decoder->output[0]->buffer_num_min, decoder->output[0]->buffer_num_recommended) + ctx->extra_buffers;
ctx->pool_out->pool = mmal_pool_create(decoder->output[0]->buffer_num,
decoder->output[0]->buffer_size);
if (!ctx->pool_out->pool) {
ret = AVERROR(ENOMEM);
goto fail;
}
return 0;
fail:
return ret < 0 ? ret : AVERROR_UNKNOWN;
}
/* XXX: make it use less memory */
static int mpeg4_decode_header(AVCodecParserContext *s1, AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
struct Mp4vParseContext *pc = s1->priv_data;
Mpeg4DecContext *dec_ctx = &pc->dec_ctx;
MpegEncContext *s = &dec_ctx->m;
GetBitContext gb1, *gb = &gb1;
int ret;
s->avctx = avctx;
s->current_picture_ptr = &s->current_picture;
if (avctx->extradata_size && pc->first_picture) {
init_get_bits(gb, avctx->extradata, avctx->extradata_size * 8);
ret = ff_mpeg4_decode_picture_header(dec_ctx, gb);
}
init_get_bits(gb, buf, 8 * buf_size);
ret = ff_mpeg4_decode_picture_header(dec_ctx, gb);
if (s->width && (!avctx->width || !avctx->height ||
!avctx->coded_width || !avctx->coded_height)) {
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
}
s1->pict_type = s->pict_type;
pc->first_picture = 0;
return ret;
}
static int gif_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
GifState *s = avctx->priv_data;
AVFrame *picture = data;
int ret;
bytestream2_init(&s->gb, buf, buf_size);
if ((ret = gif_read_header1(s)) < 0)
return ret;
avctx->pix_fmt = AV_PIX_FMT_PAL8;
if ((ret = ff_set_dimensions(avctx, s->screen_width, s->screen_height)) < 0)
return ret;
if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
s->image_palette = (uint32_t *)picture->data[1];
ret = gif_parse_next_image(s, picture);
if (ret < 0)
return ret;
*got_frame = 1;
return bytestream2_tell(&s->gb);
}
static int smvjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
const AVPixFmtDescriptor *desc;
SMVJpegDecodeContext *s = avctx->priv_data;
AVFrame* mjpeg_data = s->picture[0];
int i, cur_frame = 0, ret = 0;
cur_frame = avpkt->pts % s->frames_per_jpeg;
/* Are we at the start of a block? */
if (!cur_frame) {
av_frame_unref(mjpeg_data);
ret = avcodec_decode_video2(s->avctx, mjpeg_data, &s->mjpeg_data_size, avpkt);
if (ret < 0) {
s->mjpeg_data_size = 0;
return ret;
}
} else if (!s->mjpeg_data_size)
return AVERROR(EINVAL);
desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
av_assert0(desc);
if (mjpeg_data->height % (s->frames_per_jpeg << desc->log2_chroma_h)) {
av_log(avctx, AV_LOG_ERROR, "Invalid height\n");
return AVERROR_INVALIDDATA;
}
/*use the last lot... */
*data_size = s->mjpeg_data_size;
avctx->pix_fmt = s->avctx->pix_fmt;
/* We shouldn't get here if frames_per_jpeg <= 0 because this was rejected
in init */
ret = ff_set_dimensions(avctx, mjpeg_data->width, mjpeg_data->height / s->frames_per_jpeg);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Failed to set dimensions\n");
return ret;
}
if (*data_size) {
s->picture[1]->extended_data = NULL;
s->picture[1]->width = avctx->width;
s->picture[1]->height = avctx->height;
s->picture[1]->format = avctx->pix_fmt;
/* ff_init_buffer_info(avctx, &s->picture[1]); */
smv_img_pnt(s->picture[1]->data, mjpeg_data->data, mjpeg_data->linesize,
avctx->pix_fmt, avctx->width, avctx->height, cur_frame);
for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
s->picture[1]->linesize[i] = mjpeg_data->linesize[i];
ret = av_frame_ref(data, s->picture[1]);
}
return ret;
}
/* [DIRAC_STD] 10. Sequence Header. sequence_header() */
int avpriv_dirac_parse_sequence_header(AVCodecContext *avctx, GetBitContext *gb,
dirac_source_params *source)
{
unsigned version_major;
unsigned video_format, picture_coding_mode;
int ret;
/* [DIRAC_SPEC] 10.1 Parse Parameters. parse_parameters() */
version_major = svq3_get_ue_golomb(gb);
svq3_get_ue_golomb(gb); /* version_minor */
avctx->profile = svq3_get_ue_golomb(gb);
avctx->level = svq3_get_ue_golomb(gb);
/* [DIRAC_SPEC] sequence_header() -> base_video_format as defined in
* 10.2 Base Video Format, table 10.1 Dirac predefined video formats */
video_format = svq3_get_ue_golomb(gb);
if (version_major < 2)
av_log(avctx, AV_LOG_WARNING, "Stream is old and may not work\n");
else if (version_major > 2)
av_log(avctx, AV_LOG_WARNING, "Stream may have unhandled features\n");
if (video_format > 20U)
return AVERROR_INVALIDDATA;
/* Fill in defaults for the source parameters. */
*source = dirac_source_parameters_defaults[video_format];
/* [DIRAC_STD] 10.3 Source Parameters
* Override the defaults. */
if (ret = parse_source_parameters(avctx, gb, source))
return ret;
ret = ff_set_dimensions(avctx, source->width, source->height);
if (ret < 0)
return ret;
ff_set_sar(avctx, avctx->sample_aspect_ratio);
/* [DIRAC_STD] picture_coding_mode shall be 0 for fields and 1 for frames
* currently only used to signal field coding */
picture_coding_mode = svq3_get_ue_golomb(gb);
if (picture_coding_mode != 0) {
av_log(avctx, AV_LOG_ERROR, "Unsupported picture coding mode %d\n",
picture_coding_mode);
return AVERROR_INVALIDDATA;
}
return 0;
}
static int tqi_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
TqiContext *t = avctx->priv_data;
AVFrame *frame = data;
int ret, w, h;
w = AV_RL16(&buf[0]);
h = AV_RL16(&buf[2]);
tqi_calculate_qtable(t, buf[4]);
buf += 8;
ret = ff_set_dimensions(avctx, w, h);
if (ret < 0)
return ret;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
av_fast_padded_malloc(&t->bitstream_buf, &t->bitstream_buf_size,
buf_end - buf);
if (!t->bitstream_buf)
return AVERROR(ENOMEM);
t->bsdsp.bswap_buf(t->bitstream_buf, (const uint32_t *) buf,
(buf_end - buf) / 4);
init_get_bits(&t->gb, t->bitstream_buf, 8 * (buf_end - buf));
t->last_dc[0] =
t->last_dc[1] =
t->last_dc[2] = 0;
for (t->mb_y = 0; t->mb_y < (h + 15) / 16; t->mb_y++) {
for (t->mb_x = 0; t->mb_x < (w + 15) / 16; t->mb_x++) {
if (tqi_decode_mb(t, t->block) < 0)
break;
tqi_idct_put(avctx, frame, t->block);
}
}
*got_frame = 1;
return buf_size;
}
static int tgq_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
TgqContext *s = avctx->priv_data;
AVFrame *frame = data;
int x, y, ret;
int big_endian;
if (buf_size < 16) {
av_log(avctx, AV_LOG_WARNING, "truncated header\n");
return AVERROR_INVALIDDATA;
}
big_endian = AV_RL32(&buf[4]) > 0x000FFFFF;
bytestream2_init(&s->gb, buf + 8, buf_size - 8);
if (big_endian) {
s->width = bytestream2_get_be16u(&s->gb);
s->height = bytestream2_get_be16u(&s->gb);
} else {
s->width = bytestream2_get_le16u(&s->gb);
s->height = bytestream2_get_le16u(&s->gb);
}
ret = ff_set_dimensions(s->avctx, s->width, s->height);
if (ret < 0)
return ret;
tgq_calculate_qtable(s, bytestream2_get_byteu(&s->gb));
bytestream2_skip(&s->gb, 3);
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
frame->key_frame = 1;
frame->pict_type = AV_PICTURE_TYPE_I;
for (y = 0; y < FFALIGN(avctx->height, 16) >> 4; y++)
for (x = 0; x < FFALIGN(avctx->width, 16) >> 4; x++)
if (tgq_decode_mb(s, frame, y, x) < 0)
return AVERROR_INVALIDDATA;
*got_frame = 1;
return avpkt->size;
}
static int tqi_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
TqiContext *t = avctx->priv_data;
MpegEncContext *s = &t->s;
AVFrame *frame = data;
int ret;
s->width = AV_RL16(&buf[0]);
s->height = AV_RL16(&buf[2]);
tqi_calculate_qtable(s, buf[4]);
buf += 8;
ret = ff_set_dimensions(s->avctx, s->width, s->height);
if (ret < 0)
return ret;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
av_fast_padded_malloc(&t->bitstream_buf, &t->bitstream_buf_size,
buf_end - buf);
if (!t->bitstream_buf)
return AVERROR(ENOMEM);
t->bsdsp.bswap_buf(t->bitstream_buf, (const uint32_t *) buf,
(buf_end - buf) / 4);
init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf));
s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0;
for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++)
for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++)
{
if (tqi_decode_mb(s, t->block) < 0)
goto end;
tqi_idct_put(t, frame, t->block);
}
end:
*got_frame = 1;
return buf_size;
}
static int svc_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
SVCContext *s = avctx->priv_data;
SBufferInfo info = { 0 };
uint8_t* ptrs[3];
int ret, linesize[3];
AVFrame *avframe = data;
DECODING_STATE state;
state = (*s->decoder)->DecodeFrame2(s->decoder, avpkt->data, avpkt->size, ptrs, &info);
if (state != dsErrorFree) {
av_log(avctx, AV_LOG_ERROR, "DecodeFrame2 failed\n");
return AVERROR_UNKNOWN;
}
if (info.iBufferStatus != 1) {
av_log(avctx, AV_LOG_DEBUG, "No frame produced\n");
return avpkt->size;
}
ret = ff_set_dimensions(avctx, info.UsrData.sSystemBuffer.iWidth, info.UsrData.sSystemBuffer.iHeight);
if (ret < 0)
return ret;
// The decoder doesn't (currently) support decoding into a user
// provided buffer, so do a copy instead.
if (ff_get_buffer(avctx, avframe, 0) < 0) {
av_log(avctx, AV_LOG_ERROR, "Unable to allocate buffer\n");
return AVERROR(ENOMEM);
}
linesize[0] = info.UsrData.sSystemBuffer.iStride[0];
linesize[1] = linesize[2] = info.UsrData.sSystemBuffer.iStride[1];
av_image_copy(avframe->data, avframe->linesize, (const uint8_t **) ptrs, linesize, avctx->pix_fmt, avctx->width, avctx->height);
avframe->pts = avpkt->pts;
avframe->pkt_dts = avpkt->dts;
#if FF_API_PKT_PTS
FF_DISABLE_DEPRECATION_WARNINGS
avframe->pkt_pts = avpkt->pts;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
*got_frame = 1;
return avpkt->size;
}
static int vp5_parse_header(VP56Context *s, const uint8_t *buf, int buf_size)
{
VP56RangeCoder *c = &s->c;
int rows, cols;
ff_vp56_init_range_decoder(&s->c, buf, buf_size);
s->frames[VP56_FRAME_CURRENT]->key_frame = !vp56_rac_get(c);
vp56_rac_get(c);
ff_vp56_init_dequant(s, vp56_rac_gets(c, 6));
if (s->frames[VP56_FRAME_CURRENT]->key_frame)
{
vp56_rac_gets(c, 8);
if(vp56_rac_gets(c, 5) > 5)
return AVERROR_INVALIDDATA;
vp56_rac_gets(c, 2);
if (vp56_rac_get(c)) {
av_log(s->avctx, AV_LOG_ERROR, "interlacing not supported\n");
return AVERROR_PATCHWELCOME;
}
rows = vp56_rac_gets(c, 8); /* number of stored macroblock rows */
cols = vp56_rac_gets(c, 8); /* number of stored macroblock cols */
if (!rows || !cols) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid size %dx%d\n",
cols << 4, rows << 4);
return AVERROR_INVALIDDATA;
}
vp56_rac_gets(c, 8); /* number of displayed macroblock rows */
vp56_rac_gets(c, 8); /* number of displayed macroblock cols */
vp56_rac_gets(c, 2);
if (!s->macroblocks || /* first frame */
16*cols != s->avctx->coded_width ||
16*rows != s->avctx->coded_height) {
int ret = ff_set_dimensions(s->avctx, 16 * cols, 16 * rows);
if (ret < 0)
return ret;
return VP56_SIZE_CHANGE;
}
} else if (!s->macroblocks)
return AVERROR_INVALIDDATA;
return 0;
}
static int vp56_size_changed(VP56Context *s)
{
AVCodecContext *avctx = s->avctx;
int stride = s->frames[VP56_FRAME_CURRENT]->linesize[0];
int i;
s->plane_width[0] = s->plane_width[3] = avctx->coded_width;
s->plane_width[1] = s->plane_width[2] = avctx->coded_width/2;
s->plane_height[0] = s->plane_height[3] = avctx->coded_height;
s->plane_height[1] = s->plane_height[2] = avctx->coded_height/2;
for (i=0; i<4; i++)
s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT]->linesize[i];
s->mb_width = (avctx->coded_width +15) / 16;
s->mb_height = (avctx->coded_height+15) / 16;
if (s->mb_width > 1000 || s->mb_height > 1000) {
ff_set_dimensions(avctx, 0, 0);
av_log(avctx, AV_LOG_ERROR, "picture too big\n");
return -1;
}
av_reallocp_array(&s->above_blocks, 4*s->mb_width+6,
sizeof(*s->above_blocks));
av_reallocp_array(&s->macroblocks, s->mb_width*s->mb_height,
sizeof(*s->macroblocks));
av_free(s->edge_emu_buffer_alloc);
s->edge_emu_buffer_alloc = av_malloc(16*stride);
s->edge_emu_buffer = s->edge_emu_buffer_alloc;
if (!s->above_blocks || !s->macroblocks || !s->edge_emu_buffer_alloc)
return AVERROR(ENOMEM);
if (s->flip < 0)
s->edge_emu_buffer += 15 * stride;
if (s->alpha_context)
return vp56_size_changed(s->alpha_context);
return 0;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
AnsiContext *s = avctx->priv_data;
avctx->pix_fmt = AV_PIX_FMT_PAL8;
s->frame = av_frame_alloc();
if (!s->frame)
return AVERROR(ENOMEM);
/* defaults */
s->font = ff_vga16_font;
s->font_height = 16;
s->fg = DEFAULT_FG_COLOR;
s->bg = DEFAULT_BG_COLOR;
if (!avctx->width || !avctx->height) {
int ret = ff_set_dimensions(avctx, 80 << 3, 25 << 4);
if (ret < 0)
return ret;
}
return 0;
}
/* XXX: make it use less memory */
static int mpeg4_decode_header(AVCodecParserContext *s1, AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
struct Mp4vParseContext *pc = s1->priv_data;
Mpeg4DecContext *dec_ctx = &pc->dec_ctx;
MpegEncContext *s = &dec_ctx->m;
GetBitContext gb1, *gb = &gb1;
int ret;
s->avctx = avctx;
s->current_picture_ptr = &s->current_picture;
if (avctx->extradata_size && pc->first_picture) {
init_get_bits(gb, avctx->extradata, avctx->extradata_size * 8);
ret = ff_mpeg4_decode_picture_header(dec_ctx, gb);
if (ret < -1)
av_log(avctx, AV_LOG_WARNING, "Failed to parse extradata\n");
}
init_get_bits(gb, buf, 8 * buf_size);
ret = ff_mpeg4_decode_picture_header(dec_ctx, gb);
if (s->width && (!avctx->width || !avctx->height ||
!avctx->coded_width || !avctx->coded_height)) {
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
}
if((s1->flags & PARSER_FLAG_USE_CODEC_TS) && s->avctx->time_base.den>0 && ret>=0){
av_assert1(s1->pts == AV_NOPTS_VALUE);
av_assert1(s1->dts == AV_NOPTS_VALUE);
s1->pts = av_rescale_q(s->time, (AVRational){1, s->avctx->time_base.den}, (AVRational){1, 1200000});
}
s1->pict_type = s->pict_type;
pc->first_picture = 0;
return ret;
}
static int xbm_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
AVFrame *p = data;
int ret, linesize, i, j;
int width = 0;
int height = 0;
const uint8_t *end, *ptr = avpkt->data;
const uint8_t *next;
uint8_t *dst;
avctx->pix_fmt = AV_PIX_FMT_MONOWHITE;
end = avpkt->data + avpkt->size;
width = parse_str_int(avpkt->data, avpkt->size, "_width");
height = parse_str_int(avpkt->data, avpkt->size, "_height");
if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
return ret;
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
return ret;
// goto start of image data
next = memchr(ptr, '{', avpkt->size);
if (!next)
next = memchr(ptr, '(', avpkt->size);
if (!next)
return AVERROR_INVALIDDATA;
ptr = next + 1;
linesize = (avctx->width + 7) / 8;
for (i = 0; i < avctx->height; i++) {
dst = p->data[0] + i * p->linesize[0];
for (j = 0; j < linesize; j++) {
uint8_t val;
while (ptr < end && *ptr != 'x' && *ptr != '$')
ptr++;
ptr ++;
if (ptr < end && av_isxdigit(*ptr)) {
val = convert(*ptr++);
if (av_isxdigit(*ptr))
val = (val << 4) + convert(*ptr++);
*dst++ = ff_reverse[val];
if (av_isxdigit(*ptr) && j+1 < linesize) {
j++;
val = convert(*ptr++);
if (av_isxdigit(*ptr))
val = (val << 4) + convert(*ptr++);
*dst++ = ff_reverse[val];
}
} else {
av_log(avctx, AV_LOG_ERROR,
"Unexpected data at %.8s.\n", ptr);
return AVERROR_INVALIDDATA;
}
}
}
p->key_frame = 1;
p->pict_type = AV_PICTURE_TYPE_I;
*got_frame = 1;
return avpkt->size;
}
/* Returns the number of bytes consumed from the bytestream. Returns -1 if
* there was an error while decoding the header */
static int truemotion1_decode_header(TrueMotion1Context *s)
{
int i, ret;
int width_shift = 0;
int new_pix_fmt;
struct frame_header header;
uint8_t header_buffer[128] = { 0 }; /* logical maximum size of the header */
const uint8_t *sel_vector_table;
header.header_size = ((s->buf[0] >> 5) | (s->buf[0] << 3)) & 0x7f;
if (s->buf[0] < 0x10 || header.header_size >= s->size)
{
av_log(s->avctx, AV_LOG_ERROR, "invalid header size (%d)\n", s->buf[0]);
return AVERROR_INVALIDDATA;
}
/* unscramble the header bytes with a XOR operation */
for (i = 1; i < header.header_size; i++)
header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
header.compression = header_buffer[0];
header.deltaset = header_buffer[1];
header.vectable = header_buffer[2];
header.ysize = AV_RL16(&header_buffer[3]);
header.xsize = AV_RL16(&header_buffer[5]);
header.checksum = AV_RL16(&header_buffer[7]);
header.version = header_buffer[9];
header.header_type = header_buffer[10];
header.flags = header_buffer[11];
header.control = header_buffer[12];
/* Version 2 */
if (header.version >= 2)
{
if (header.header_type > 3)
{
av_log(s->avctx, AV_LOG_ERROR, "invalid header type (%d)\n", header.header_type);
return AVERROR_INVALIDDATA;
} else if ((header.header_type == 2) || (header.header_type == 3)) {
s->flags = header.flags;
if (!(s->flags & FLAG_INTERFRAME))
s->flags |= FLAG_KEYFRAME;
} else
s->flags = FLAG_KEYFRAME;
} else /* Version 1 */
s->flags = FLAG_KEYFRAME;
if (s->flags & FLAG_SPRITE) {
avpriv_request_sample(s->avctx, "Frame with sprite");
/* FIXME header.width, height, xoffset and yoffset aren't initialized */
return AVERROR_PATCHWELCOME;
} else {
s->w = header.xsize;
s->h = header.ysize;
if (header.header_type < 2) {
if ((s->w < 213) && (s->h >= 176))
{
s->flags |= FLAG_INTERPOLATED;
avpriv_request_sample(s->avctx, "Interpolated frame");
}
}
}
if (header.compression >= 17) {
av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
return AVERROR_INVALIDDATA;
}
if ((header.deltaset != s->last_deltaset) ||
(header.vectable != s->last_vectable))
select_delta_tables(s, header.deltaset);
if ((header.compression & 1) && header.header_type)
sel_vector_table = pc_tbl2;
else {
if (header.vectable > 0 && header.vectable < 4)
sel_vector_table = tables[header.vectable - 1];
else {
av_log(s->avctx, AV_LOG_ERROR, "invalid vector table id (%d)\n", header.vectable);
return AVERROR_INVALIDDATA;
}
}
if (compression_types[header.compression].algorithm == ALGO_RGB24H) {
new_pix_fmt = AV_PIX_FMT_RGB32;
width_shift = 1;
} else
new_pix_fmt = AV_PIX_FMT_RGB555; // RGB565 is supported as well
s->w >>= width_shift;
if (s->w != s->avctx->width || s->h != s->avctx->height ||
new_pix_fmt != s->avctx->pix_fmt) {
av_frame_unref(s->frame);
s->avctx->sample_aspect_ratio = (AVRational){ 1 << width_shift, 1 };
s->avctx->pix_fmt = new_pix_fmt;
if ((ret = ff_set_dimensions(s->avctx, s->w, s->h)) < 0)
return ret;
av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
if (!s->vert_pred)
return AVERROR(ENOMEM);
}
/* There is 1 change bit per 4 pixels, so each change byte represents
* 32 pixels; divide width by 4 to obtain the number of change bits and
* then round up to the nearest byte. */
s->mb_change_bits_row_size = ((s->avctx->width >> (2 - width_shift)) + 7) >> 3;
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
gen_vector_table24(s, sel_vector_table);
else
if (s->avctx->pix_fmt == AV_PIX_FMT_RGB555)
gen_vector_table15(s, sel_vector_table);
else
gen_vector_table16(s, sel_vector_table);
}
/* set up pointers to the other key data chunks */
s->mb_change_bits = s->buf + header.header_size;
if (s->flags & FLAG_KEYFRAME) {
/* no change bits specified for a keyframe; only index bytes */
s->index_stream = s->mb_change_bits;
} else {
/* one change bit per 4x4 block */
s->index_stream = s->mb_change_bits +
(s->mb_change_bits_row_size * (s->avctx->height >> 2));
}
s->index_stream_size = s->size - (s->index_stream - s->buf);
s->last_deltaset = header.deltaset;
s->last_vectable = header.vectable;
s->compression = header.compression;
s->block_width = compression_types[header.compression].block_width;
s->block_height = compression_types[header.compression].block_height;
s->block_type = compression_types[header.compression].block_type;
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_INFO, "tables: %d / %d c:%d %dx%d t:%d %s%s%s%s\n",
s->last_deltaset, s->last_vectable, s->compression, s->block_width,
s->block_height, s->block_type,
s->flags & FLAG_KEYFRAME ? " KEY" : "",
s->flags & FLAG_INTERFRAME ? " INTER" : "",
s->flags & FLAG_SPRITE ? " SPRITE" : "",
s->flags & FLAG_INTERPOLATED ? " INTERPOL" : "");
return header.header_size;
}
static int h261_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
H261Context *h = avctx->priv_data;
MpegEncContext *s = &h->s;
int ret;
AVFrame *pict = data;
av_dlog(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
av_dlog(avctx, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
s->flags = avctx->flags;
s->flags2 = avctx->flags2;
h->gob_start_code_skipped = 0;
retry:
init_get_bits(&s->gb, buf, buf_size * 8);
if (!s->context_initialized)
// we need the IDCT permutaton for reading a custom matrix
ff_mpv_idct_init(s);
ret = h261_decode_picture_header(h);
/* skip if the header was thrashed */
if (ret < 0) {
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
return -1;
}
if (s->width != avctx->coded_width || s->height != avctx->coded_height) {
ParseContext pc = s->parse_context; // FIXME move this demuxing hack to libavformat
s->parse_context.buffer = 0;
ff_mpv_common_end(s);
s->parse_context = pc;
}
if (!s->context_initialized) {
if ((ret = ff_mpv_common_init(s)) < 0)
return ret;
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
goto retry;
}
// for skipping the frame
s->current_picture.f->pict_type = s->pict_type;
s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
if ((avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||
(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) ||
avctx->skip_frame >= AVDISCARD_ALL)
return get_consumed_bytes(s, buf_size);
if (ff_mpv_frame_start(s, avctx) < 0)
return -1;
ff_mpeg_er_frame_start(s);
/* decode each macroblock */
s->mb_x = 0;
s->mb_y = 0;
while (h->gob_number < (s->mb_height == 18 ? 12 : 5)) {
if (h261_resync(h) < 0)
break;
h261_decode_gob(h);
}
ff_mpv_frame_end(s);
av_assert0(s->current_picture.f->pict_type == s->current_picture_ptr->f->pict_type);
av_assert0(s->current_picture.f->pict_type == s->pict_type);
if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
return ret;
ff_print_debug_info(s, s->current_picture_ptr, pict);
*got_frame = 1;
return get_consumed_bytes(s, buf_size);
}
static int gif_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
{
GifState *s = avctx->priv_data;
int ret;
bytestream2_init(&s->gb, avpkt->data, avpkt->size);
s->frame->pts = avpkt->pts;
s->frame->pkt_pts = avpkt->pts;
s->frame->pkt_dts = avpkt->dts;
av_frame_set_pkt_duration(s->frame, avpkt->duration);
if (avpkt->size >= 6) {
s->keyframe = memcmp(avpkt->data, gif87a_sig, 6) == 0 ||
memcmp(avpkt->data, gif89a_sig, 6) == 0;
} else {
s->keyframe = 0;
}
if (s->keyframe) {
s->keyframe_ok = 0;
s->gce_prev_disposal = GCE_DISPOSAL_NONE;
if ((ret = gif_read_header1(s)) < 0)
return ret;
if ((ret = ff_set_dimensions(avctx, s->screen_width, s->screen_height)) < 0)
return ret;
av_frame_unref(s->frame);
if ((ret = ff_get_buffer(avctx, s->frame, 0)) < 0)
return ret;
av_fast_malloc(&s->idx_line, &s->idx_line_size, s->screen_width);
if (!s->idx_line)
return AVERROR(ENOMEM);
s->frame->pict_type = AV_PICTURE_TYPE_I;
s->frame->key_frame = 1;
s->keyframe_ok = 1;
} else {
if (!s->keyframe_ok) {
av_log(avctx, AV_LOG_ERROR, "cannot decode frame without keyframe\n");
return AVERROR_INVALIDDATA;
}
if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
return ret;
s->frame->pict_type = AV_PICTURE_TYPE_P;
s->frame->key_frame = 0;
}
ret = gif_parse_next_image(s, s->frame);
if (ret < 0)
return ret;
if ((ret = av_frame_ref(data, s->frame)) < 0)
return ret;
*got_frame = 1;
return bytestream2_tell(&s->gb);
}
static int mediacodec_dec_parse_format(AVCodecContext *avctx, MediaCodecDecContext *s)
{
int width = 0;
int height = 0;
int32_t value = 0;
char *format = NULL;
if (!s->format) {
av_log(avctx, AV_LOG_ERROR, "Output MediaFormat is not set\n");
return AVERROR(EINVAL);
}
format = ff_AMediaFormat_toString(s->format);
if (!format) {
return AVERROR_EXTERNAL;
}
av_log(avctx, AV_LOG_DEBUG, "Parsing MediaFormat %s\n", format);
av_freep(&format);
/* Mandatory fields */
if (!ff_AMediaFormat_getInt32(s->format, "width", &value)) {
format = ff_AMediaFormat_toString(s->format);
av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", "width", format);
av_freep(&format);
return AVERROR_EXTERNAL;
}
s->width = value;
if (!ff_AMediaFormat_getInt32(s->format, "height", &value)) {
format = ff_AMediaFormat_toString(s->format);
av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", "height", format);
av_freep(&format);
return AVERROR_EXTERNAL;
}
s->height = value;
if (!ff_AMediaFormat_getInt32(s->format, "stride", &value)) {
format = ff_AMediaFormat_toString(s->format);
av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", "stride", format);
av_freep(&format);
return AVERROR_EXTERNAL;
}
s->stride = value > 0 ? value : s->width;
if (!ff_AMediaFormat_getInt32(s->format, "slice-height", &value)) {
format = ff_AMediaFormat_toString(s->format);
av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", "slice-height", format);
av_freep(&format);
return AVERROR_EXTERNAL;
}
s->slice_height = value > 0 ? value : s->height;
if (strstr(s->codec_name, "OMX.Nvidia.")) {
s->slice_height = FFALIGN(s->height, 16);
} else if (strstr(s->codec_name, "OMX.SEC.avc.dec")) {
s->slice_height = avctx->height;
s->stride = avctx->width;
}
if (!ff_AMediaFormat_getInt32(s->format, "color-format", &value)) {
format = ff_AMediaFormat_toString(s->format);
av_log(avctx, AV_LOG_ERROR, "Could not get %s from format %s\n", "color-format", format);
av_freep(&format);
return AVERROR_EXTERNAL;
}
s->color_format = value;
s->pix_fmt = avctx->pix_fmt = mcdec_map_color_format(avctx, s, value);
if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
av_log(avctx, AV_LOG_ERROR, "Output color format is not supported\n");
return AVERROR(EINVAL);
}
/* Optional fields */
if (ff_AMediaFormat_getInt32(s->format, "crop-top", &value))
s->crop_top = value;
if (ff_AMediaFormat_getInt32(s->format, "crop-bottom", &value))
s->crop_bottom = value;
if (ff_AMediaFormat_getInt32(s->format, "crop-left", &value))
s->crop_left = value;
if (ff_AMediaFormat_getInt32(s->format, "crop-right", &value))
s->crop_right = value;
width = s->crop_right + 1 - s->crop_left;
height = s->crop_bottom + 1 - s->crop_top;
av_log(avctx, AV_LOG_INFO,
"Output crop parameters top=%d bottom=%d left=%d right=%d, "
"resulting dimensions width=%d height=%d\n",
s->crop_top, s->crop_bottom, s->crop_left, s->crop_right,
width, height);
return ff_set_dimensions(avctx, width, height);
}
static int vp6_parse_header(VP56Context *s, const uint8_t *buf, int buf_size)
{
VP56RangeCoder *c = &s->c;
int parse_filter_info = 0;
int coeff_offset = 0;
int vrt_shift = 0;
int sub_version;
int rows, cols;
int res = 0;
int separated_coeff = buf[0] & 1;
s->frames[VP56_FRAME_CURRENT]->key_frame = !(buf[0] & 0x80);
ff_vp56_init_dequant(s, (buf[0] >> 1) & 0x3F);
if (s->frames[VP56_FRAME_CURRENT]->key_frame) {
sub_version = buf[1] >> 3;
if (sub_version > 8)
return AVERROR_INVALIDDATA;
s->filter_header = buf[1] & 0x06;
if (buf[1] & 1) {
avpriv_report_missing_feature(s->avctx, "Interlacing");
return AVERROR_PATCHWELCOME;
}
if (separated_coeff || !s->filter_header) {
coeff_offset = AV_RB16(buf+2) - 2;
buf += 2;
buf_size -= 2;
}
rows = buf[2]; /* number of stored macroblock rows */
cols = buf[3]; /* number of stored macroblock cols */
/* buf[4] is number of displayed macroblock rows */
/* buf[5] is number of displayed macroblock cols */
if (!rows || !cols) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid size %dx%d\n", cols << 4, rows << 4);
return AVERROR_INVALIDDATA;
}
if (!s->macroblocks || /* first frame */
16*cols != s->avctx->coded_width ||
16*rows != s->avctx->coded_height) {
if (s->avctx->extradata_size == 0 &&
FFALIGN(s->avctx->width, 16) == 16 * cols &&
FFALIGN(s->avctx->height, 16) == 16 * rows) {
// We assume this is properly signalled container cropping,
// in an F4V file. Just set the coded_width/height, don't
// touch the cropped ones.
s->avctx->coded_width = 16 * cols;
s->avctx->coded_height = 16 * rows;
} else {
int ret = ff_set_dimensions(s->avctx, 16 * cols, 16 * rows);
if (ret < 0)
return ret;
if (s->avctx->extradata_size == 1) {
s->avctx->width -= s->avctx->extradata[0] >> 4;
s->avctx->height -= s->avctx->extradata[0] & 0x0F;
}
}
res = VP56_SIZE_CHANGE;
}
static int decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
SgiState *s = avctx->priv_data;
AVFrame *p = data;
unsigned int dimension, rle;
int ret = 0;
uint8_t *out_buf, *out_end;
bytestream2_init(&s->g, avpkt->data, avpkt->size);
if (bytestream2_get_bytes_left(&s->g) < SGI_HEADER_SIZE) {
av_log(avctx, AV_LOG_ERROR, "buf_size too small (%d)\n", avpkt->size);
return AVERROR_INVALIDDATA;
}
/* Test for SGI magic. */
if (bytestream2_get_be16(&s->g) != SGI_MAGIC) {
av_log(avctx, AV_LOG_ERROR, "bad magic number\n");
return AVERROR_INVALIDDATA;
}
rle = bytestream2_get_byte(&s->g);
s->bytes_per_channel = bytestream2_get_byte(&s->g);
dimension = bytestream2_get_be16(&s->g);
s->width = bytestream2_get_be16(&s->g);
s->height = bytestream2_get_be16(&s->g);
s->depth = bytestream2_get_be16(&s->g);
if (s->bytes_per_channel != 1 && s->bytes_per_channel != 2) {
av_log(avctx, AV_LOG_ERROR, "wrong channel number\n");
return -1;
}
/* Check for supported image dimensions. */
if (dimension != 2 && dimension != 3) {
av_log(avctx, AV_LOG_ERROR, "wrong dimension number\n");
return -1;
}
if (s->depth == SGI_GRAYSCALE) {
avctx->pix_fmt = s->bytes_per_channel == 2 ? AV_PIX_FMT_GRAY16BE : AV_PIX_FMT_GRAY8;
} else if (s->depth == SGI_RGB) {
avctx->pix_fmt = s->bytes_per_channel == 2 ? AV_PIX_FMT_RGB48BE : AV_PIX_FMT_RGB24;
} else if (s->depth == SGI_RGBA) {
avctx->pix_fmt = s->bytes_per_channel == 2 ? AV_PIX_FMT_RGBA64BE : AV_PIX_FMT_RGBA;
} else {
av_log(avctx, AV_LOG_ERROR, "wrong picture format\n");
return -1;
}
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
if (ff_get_buffer(avctx, p, 0) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed.\n");
return -1;
}
p->pict_type = AV_PICTURE_TYPE_I;
p->key_frame = 1;
out_buf = p->data[0];
out_end = out_buf + p->linesize[0] * s->height;
s->linesize = p->linesize[0];
/* Skip header. */
bytestream2_seek(&s->g, SGI_HEADER_SIZE, SEEK_SET);
if (rle) {
ret = read_rle_sgi(out_end, s);
} else {
ret = read_uncompressed_sgi(out_buf, s);
}
if (ret == 0) {
*got_frame = 1;
return avpkt->size;
} else {
return ret;
}
}
static int pix_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
AVFrame *frame = data;
int ret, i;
GetByteContext gb;
unsigned int bytes_pp;
unsigned int magic[4];
unsigned int chunk_type;
unsigned int data_len;
unsigned int bytes_per_scanline;
unsigned int bytes_left;
PixHeader hdr;
bytestream2_init(&gb, avpkt->data, avpkt->size);
magic[0] = bytestream2_get_be32(&gb);
magic[1] = bytestream2_get_be32(&gb);
magic[2] = bytestream2_get_be32(&gb);
magic[3] = bytestream2_get_be32(&gb);
if (magic[0] != 0x12 ||
magic[1] != 0x08 ||
magic[2] != 0x02 ||
magic[3] != 0x02) {
av_log(avctx, AV_LOG_ERROR, "Not a BRender PIX file.\n");
return AVERROR_INVALIDDATA;
}
chunk_type = bytestream2_get_be32(&gb);
if (chunk_type != HEADER1_CHUNK && chunk_type != HEADER2_CHUNK) {
av_log(avctx, AV_LOG_ERROR, "Invalid chunk type %d.\n", chunk_type);
return AVERROR_INVALIDDATA;
}
ret = pix_decode_header(&hdr, &gb);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid header length.\n");
return ret;
}
switch (hdr.format) {
case 3:
avctx->pix_fmt = AV_PIX_FMT_PAL8;
bytes_pp = 1;
break;
case 4:
avctx->pix_fmt = AV_PIX_FMT_RGB555BE;
bytes_pp = 2;
break;
case 5:
avctx->pix_fmt = AV_PIX_FMT_RGB565BE;
bytes_pp = 2;
break;
case 6:
avctx->pix_fmt = AV_PIX_FMT_RGB24;
bytes_pp = 3;
break;
case 7:
avctx->pix_fmt = AV_PIX_FMT_0RGB;
bytes_pp = 4;
break;
case 8: // ARGB
avctx->pix_fmt = AV_PIX_FMT_ARGB;
bytes_pp = 4;
break;
case 18:
avctx->pix_fmt = AV_PIX_FMT_Y400A;
bytes_pp = 2;
break;
default:
avpriv_request_sample(avctx, "Format %d", hdr.format);
return AVERROR_PATCHWELCOME;
}
if ((ret = ff_set_dimensions(avctx, hdr.width, hdr.height)) < 0)
return ret;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
chunk_type = bytestream2_get_be32(&gb);
if (avctx->pix_fmt == AV_PIX_FMT_PAL8 &&
(chunk_type == HEADER1_CHUNK ||
chunk_type == HEADER2_CHUNK)) {
/* read palette data from data[1] */
PixHeader palhdr;
uint32_t *pal_out = (uint32_t *)frame->data[1];
ret = pix_decode_header(&palhdr, &gb);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid palette header length.\n");
return ret;
}
if (palhdr.format != 7)
avpriv_request_sample(avctx, "Palette not in RGB format");
chunk_type = bytestream2_get_be32(&gb);
data_len = bytestream2_get_be32(&gb);
bytestream2_skip(&gb, 8);
if (chunk_type != IMAGE_DATA_CHUNK || data_len != 1032 ||
bytestream2_get_bytes_left(&gb) < 1032) {
av_log(avctx, AV_LOG_ERROR, "Invalid palette data.\n");
return AVERROR_INVALIDDATA;
}
// palette data is surrounded by 8 null bytes (both top and bottom)
// convert 0RGB to machine endian format (ARGB32)
for (i = 0; i < 256; ++i)
*pal_out++ = (0xFFU << 24) | bytestream2_get_be32u(&gb);
bytestream2_skip(&gb, 8);
frame->palette_has_changed = 1;
chunk_type = bytestream2_get_be32(&gb);
} else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
/* no palette supplied, use the default one */
uint32_t *pal_out = (uint32_t *)frame->data[1];
// TODO: add an AVOption to load custom palette files
av_log(avctx, AV_LOG_WARNING,
"Using default palette, colors might be off.\n");
memcpy(pal_out, std_pal_table, sizeof(uint32_t) * 256);
frame->palette_has_changed = 1;
}
data_len = bytestream2_get_be32(&gb);
bytestream2_skip(&gb, 8);
// read the image data to the buffer
bytes_per_scanline = bytes_pp * hdr.width;
bytes_left = bytestream2_get_bytes_left(&gb);
if (chunk_type != IMAGE_DATA_CHUNK || data_len != bytes_left ||
bytes_left / bytes_per_scanline < hdr.height) {
av_log(avctx, AV_LOG_ERROR, "Invalid image data.\n");
return AVERROR_INVALIDDATA;
}
av_image_copy_plane(frame->data[0], frame->linesize[0],
avpkt->data + bytestream2_tell(&gb),
bytes_per_scanline,
bytes_per_scanline, hdr.height);
frame->pict_type = AV_PICTURE_TYPE_I;
frame->key_frame = 1;
*got_frame = 1;
return avpkt->size;
}
static int decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
PicContext *s = avctx->priv_data;
AVFrame *frame = data;
uint32_t *palette;
int bits_per_plane, bpp, etype, esize, npal, pos_after_pal;
int i, x, y, plane, tmp, ret;
bytestream2_init(&s->g, avpkt->data, avpkt->size);
if (bytestream2_get_bytes_left(&s->g) < 11)
return AVERROR_INVALIDDATA;
if (bytestream2_get_le16u(&s->g) != 0x1234)
return AVERROR_INVALIDDATA;
s->width = bytestream2_get_le16u(&s->g);
s->height = bytestream2_get_le16u(&s->g);
bytestream2_skip(&s->g, 4);
tmp = bytestream2_get_byteu(&s->g);
bits_per_plane = tmp & 0xF;
s->nb_planes = (tmp >> 4) + 1;
bpp = bits_per_plane * s->nb_planes;
if (bits_per_plane > 8 || bpp < 1 || bpp > 32) {
avpriv_request_sample(avctx, "Unsupported bit depth");
return AVERROR_PATCHWELCOME;
}
if (bytestream2_peek_byte(&s->g) == 0xFF) {
bytestream2_skip(&s->g, 2);
etype = bytestream2_get_le16(&s->g);
esize = bytestream2_get_le16(&s->g);
if (bytestream2_get_bytes_left(&s->g) < esize)
return AVERROR_INVALIDDATA;
} else {
etype = -1;
esize = 0;
}
avctx->pix_fmt = AV_PIX_FMT_PAL8;
if (s->width != avctx->width && s->height != avctx->height) {
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret;
}
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
memset(frame->data[0], 0, s->height * frame->linesize[0]);
frame->pict_type = AV_PICTURE_TYPE_I;
frame->palette_has_changed = 1;
pos_after_pal = bytestream2_tell(&s->g) + esize;
palette = (uint32_t*)frame->data[1];
if (etype == 1 && esize > 1 && bytestream2_peek_byte(&s->g) < 6) {
int idx = bytestream2_get_byte(&s->g);
npal = 4;
for (i = 0; i < npal; i++)
palette[i] = ff_cga_palette[ cga_mode45_index[idx][i] ];
} else if (etype == 2) {
npal = FFMIN(esize, 16);
for (i = 0; i < npal; i++) {
int pal_idx = bytestream2_get_byte(&s->g);
palette[i] = ff_cga_palette[FFMIN(pal_idx, 16)];
}
} else if (etype == 3) {
npal = FFMIN(esize, 16);
for (i = 0; i < npal; i++) {
int pal_idx = bytestream2_get_byte(&s->g);
palette[i] = ff_ega_palette[FFMIN(pal_idx, 63)];
}
} else if (etype == 4 || etype == 5) {
npal = FFMIN(esize / 3, 256);
for (i = 0; i < npal; i++)
palette[i] = bytestream2_get_be24(&s->g) << 2;
} else {
if (bpp == 1) {
npal = 2;
palette[0] = 0x000000;
palette[1] = 0xFFFFFF;
} else if (bpp == 2) {
npal = 4;
for (i = 0; i < npal; i++)
palette[i] = ff_cga_palette[ cga_mode45_index[0][i] ];
} else {
npal = 16;
memcpy(palette, ff_cga_palette, npal * 4);
}
}
// fill remaining palette entries
memset(palette + npal, 0, AVPALETTE_SIZE - npal * 4);
// skip remaining palette bytes
bytestream2_seek(&s->g, pos_after_pal, SEEK_SET);
x = 0;
y = s->height - 1;
plane = 0;
if (bytestream2_get_le16(&s->g)) {
while (bytestream2_get_bytes_left(&s->g) >= 6) {
int stop_size, marker, t1, t2;
t1 = bytestream2_get_bytes_left(&s->g);
t2 = bytestream2_get_le16(&s->g);
stop_size = t1 - FFMIN(t1, t2);
// ignore uncompressed block size
bytestream2_skip(&s->g, 2);
marker = bytestream2_get_byte(&s->g);
while (plane < s->nb_planes &&
bytestream2_get_bytes_left(&s->g) > stop_size) {
int run = 1;
int val = bytestream2_get_byte(&s->g);
if (val == marker) {
run = bytestream2_get_byte(&s->g);
if (run == 0)
run = bytestream2_get_le16(&s->g);
val = bytestream2_get_byte(&s->g);
}
if (!bytestream2_get_bytes_left(&s->g))
break;
if (bits_per_plane == 8) {
picmemset_8bpp(s, frame, val, run, &x, &y);
if (y < 0)
goto finish;
} else {
picmemset(s, frame, val, run, &x, &y, &plane, bits_per_plane);
}
}
}
} else {
avpriv_request_sample(avctx, "Uncompressed image");
return avpkt->size;
}
finish:
*got_frame = 1;
return avpkt->size;
}
static int init_image(TiffContext *s, ThreadFrame *frame)
{
int i, ret;
uint32_t *pal;
switch (s->planar * 1000 + s->bpp * 10 + s->bppcount) {
case 11:
if (!s->palette_is_set) {
s->avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
break;
}
case 21:
case 41:
case 81:
s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
break;
case 243:
if (s->photometric == TIFF_PHOTOMETRIC_YCBCR) {
if (s->subsampling[0] == 1 && s->subsampling[1] == 1) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV444P;
} else if (s->subsampling[0] == 2 && s->subsampling[1] == 1) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV422P;
} else if (s->subsampling[0] == 4 && s->subsampling[1] == 1) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV411P;
} else if (s->subsampling[0] == 1 && s->subsampling[1] == 2) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV440P;
} else if (s->subsampling[0] == 2 && s->subsampling[1] == 2) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV420P;
} else if (s->subsampling[0] == 4 && s->subsampling[1] == 4) {
s->avctx->pix_fmt = AV_PIX_FMT_YUV410P;
} else {
av_log(s->avctx, AV_LOG_ERROR, "Unsupported YCbCr subsampling\n");
return AVERROR_PATCHWELCOME;
}
} else
s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
break;
case 161:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE;
break;
case 162:
s->avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
break;
case 324:
s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
break;
case 483:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE;
break;
case 644:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_RGBA64LE : AV_PIX_FMT_RGBA64BE;
break;
case 1243:
s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
break;
case 1324:
s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
break;
case 1483:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRP16LE : AV_PIX_FMT_GBRP16BE;
break;
case 1644:
s->avctx->pix_fmt = s->le ? AV_PIX_FMT_GBRAP16LE : AV_PIX_FMT_GBRAP16BE;
break;
default:
av_log(s->avctx, AV_LOG_ERROR,
"This format is not supported (bpp=%d, bppcount=%d)\n",
s->bpp, s->bppcount);
return AVERROR_INVALIDDATA;
}
if (s->width != s->avctx->width || s->height != s->avctx->height) {
ret = ff_set_dimensions(s->avctx, s->width, s->height);
if (ret < 0)
return ret;
}
if ((ret = ff_thread_get_buffer(s->avctx, frame, 0)) < 0)
return ret;
if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8) {
if (s->palette_is_set) {
memcpy(frame->f->data[1], s->palette, sizeof(s->palette));
} else {
/* make default grayscale pal */
pal = (uint32_t *) frame->f->data[1];
for (i = 0; i < 1<<s->bpp; i++)
pal[i] = 0xFFU << 24 | i * 255 / ((1<<s->bpp) - 1) * 0x010101;
}
}
return 0;
}
/**
* Execute ANSI escape code
* @return 0 on success, negative on error
*/
static int execute_code(AVCodecContext * avctx, int c)
{
AnsiContext *s = avctx->priv_data;
int ret, i;
int width = 0;
int height = 0;
switch(c) {
case 'A': //Cursor Up
s->y = FFMAX(s->y - (s->nb_args > 0 ? s->args[0]*s->font_height : s->font_height), 0);
break;
case 'B': //Cursor Down
s->y = FFMIN(s->y + (s->nb_args > 0 ? s->args[0]*s->font_height : s->font_height), avctx->height - s->font_height);
break;
case 'C': //Cursor Right
s->x = FFMIN(s->x + (s->nb_args > 0 ? s->args[0]*FONT_WIDTH : FONT_WIDTH), avctx->width - FONT_WIDTH);
break;
case 'D': //Cursor Left
s->x = FFMAX(s->x - (s->nb_args > 0 ? s->args[0]*FONT_WIDTH : FONT_WIDTH), 0);
break;
case 'H': //Cursor Position
case 'f': //Horizontal and Vertical Position
s->y = s->nb_args > 0 ? av_clip((s->args[0] - 1)*s->font_height, 0, avctx->height - s->font_height) : 0;
s->x = s->nb_args > 1 ? av_clip((s->args[1] - 1)*FONT_WIDTH, 0, avctx->width - FONT_WIDTH) : 0;
break;
case 'h': //set creen mode
case 'l': //reset screen mode
if (s->nb_args < 2)
s->args[0] = DEFAULT_SCREEN_MODE;
switch(s->args[0]) {
case 0: case 1: case 4: case 5: case 13: case 19: //320x200 (25 rows)
s->font = ff_cga_font;
s->font_height = 8;
width = 40<<3;
height = 25<<3;
break;
case 2: case 3: //640x400 (25 rows)
s->font = ff_vga16_font;
s->font_height = 16;
width = 80<<3;
height = 25<<4;
break;
case 6: case 14: //640x200 (25 rows)
s->font = ff_cga_font;
s->font_height = 8;
width = 80<<3;
height = 25<<3;
break;
case 7: //set line wrapping
break;
case 15: case 16: //640x350 (43 rows)
s->font = ff_cga_font;
s->font_height = 8;
width = 80<<3;
height = 43<<3;
break;
case 17: case 18: //640x480 (60 rows)
s->font = ff_cga_font;
s->font_height = 8;
width = 80<<3;
height = 60<<4;
break;
default:
avpriv_request_sample(avctx, "Unsupported screen mode");
}
if (width != 0 && height != 0 &&
(width != avctx->width || height != avctx->height)) {
av_frame_unref(s->frame);
ret = ff_set_dimensions(avctx, width, height);
if (ret < 0)
return ret;
ret = ff_get_buffer(avctx, s->frame, AV_GET_BUFFER_FLAG_REF);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
s->frame->pict_type = AV_PICTURE_TYPE_I;
s->frame->palette_has_changed = 1;
memcpy(s->frame->data[1], ff_cga_palette, 16 * 4);
erase_screen(avctx);
} else if (c == 'l') {
erase_screen(avctx);
}
break;
case 'J': //Erase in Page
switch (s->args[0]) {
case 0:
erase_line(avctx, s->x, avctx->width - s->x);
if (s->y < avctx->height - s->font_height)
memset(s->frame->data[0] + (s->y + s->font_height)*s->frame->linesize[0],
DEFAULT_BG_COLOR, (avctx->height - s->y - s->font_height)*s->frame->linesize[0]);
break;
case 1:
erase_line(avctx, 0, s->x);
if (s->y > 0)
memset(s->frame->data[0], DEFAULT_BG_COLOR, s->y * s->frame->linesize[0]);
break;
case 2:
erase_screen(avctx);
}
break;
case 'K': //Erase in Line
switch(s->args[0]) {
case 0:
erase_line(avctx, s->x, avctx->width - s->x);
break;
case 1:
erase_line(avctx, 0, s->x);
break;
case 2:
erase_line(avctx, 0, avctx->width);
}
break;
case 'm': //Select Graphics Rendition
if (s->nb_args == 0) {
s->nb_args = 1;
s->args[0] = 0;
}
for (i = 0; i < FFMIN(s->nb_args, MAX_NB_ARGS); i++) {
int m = s->args[i];
if (m == 0) {
s->attributes = 0;
s->fg = DEFAULT_FG_COLOR;
s->bg = DEFAULT_BG_COLOR;
} else if (m == 1 || m == 2 || m == 4 || m == 5 || m == 7 || m == 8) {
s->attributes |= 1 << (m - 1);
} else if (m >= 30 && m <= 38) {
s->fg = ansi_to_cga[m - 30];
} else if (m == 39) {
s->fg = ansi_to_cga[DEFAULT_FG_COLOR];
} else if (m >= 40 && m <= 47) {
s->bg = ansi_to_cga[m - 40];
} else if (m == 49) {
s->fg = ansi_to_cga[DEFAULT_BG_COLOR];
} else {
avpriv_request_sample(avctx, "Unsupported rendition parameter");
}
}
break;
case 'n': //Device Status Report
case 'R': //report current line and column
/* ignore */
break;
case 's': //Save Cursor Position
s->sx = s->x;
s->sy = s->y;
break;
case 'u': //Restore Cursor Position
s->x = av_clip(s->sx, 0, avctx->width - FONT_WIDTH);
s->y = av_clip(s->sy, 0, avctx->height - s->font_height);
break;
default:
avpriv_request_sample(avctx, "Unknown escape code");
break;
}
return 0;
}
static int rv20_decode_picture_header(RVDecContext *rv)
{
MpegEncContext *s = &rv->m;
int seq, mb_pos, i, ret;
int rpr_bits;
i = get_bits(&s->gb, 2);
switch (i) {
case 0:
s->pict_type = AV_PICTURE_TYPE_I;
break;
case 1:
s->pict_type = AV_PICTURE_TYPE_I;
break; // hmm ...
case 2:
s->pict_type = AV_PICTURE_TYPE_P;
break;
case 3:
s->pict_type = AV_PICTURE_TYPE_B;
break;
default:
av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n");
return AVERROR_INVALIDDATA;
}
if (s->last_picture_ptr == NULL && s->pict_type == AV_PICTURE_TYPE_B) {
av_log(s->avctx, AV_LOG_ERROR, "early B-frame\n");
return AVERROR_INVALIDDATA;
}
if (get_bits1(&s->gb)) {
av_log(s->avctx, AV_LOG_ERROR, "reserved bit set\n");
return AVERROR_INVALIDDATA;
}
s->qscale = get_bits(&s->gb, 5);
if (s->qscale == 0) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid qscale value: 0\n");
return AVERROR_INVALIDDATA;
}
if (RV_GET_MINOR_VER(rv->sub_id) >= 2)
s->loop_filter = get_bits1(&s->gb);
if (RV_GET_MINOR_VER(rv->sub_id) <= 1)
seq = get_bits(&s->gb, 8) << 7;
else
seq = get_bits(&s->gb, 13) << 2;
rpr_bits = s->avctx->extradata[1] & 7;
if (rpr_bits) {
int f, new_w, new_h;
rpr_bits = FFMIN((rpr_bits >> 1) + 1, 3);
f = get_bits(&s->gb, rpr_bits);
if (f) {
if (s->avctx->extradata_size < 8 + 2 * f) {
av_log(s->avctx, AV_LOG_ERROR, "Extradata too small.\n");
return AVERROR_INVALIDDATA;
}
new_w = 4 * ((uint8_t *) s->avctx->extradata)[6 + 2 * f];
new_h = 4 * ((uint8_t *) s->avctx->extradata)[7 + 2 * f];
} else {
new_w = s->orig_width;
new_h = s->orig_height;
}
if (new_w != s->width || new_h != s->height) {
av_log(s->avctx, AV_LOG_DEBUG,
"attempting to change resolution to %dx%d\n", new_w, new_h);
ff_MPV_common_end(s);
ret = ff_set_dimensions(s->avctx, new_w, new_h);
if (ret < 0)
return ret;
s->width = new_w;
s->height = new_h;
if ((ret = ff_MPV_common_init(s)) < 0)
return ret;
}
if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, rpr_bits);
}
} else if (av_image_check_size(s->width, s->height, 0, s->avctx) < 0)
static int decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
C93DecoderContext * const c93 = avctx->priv_data;
AVFrame * const newpic = c93->pictures[c93->currentpic];
AVFrame * const oldpic = c93->pictures[c93->currentpic^1];
GetByteContext gb;
uint8_t *out;
int stride, ret, i, x, y, b, bt = 0;
if ((ret = ff_set_dimensions(avctx, WIDTH, HEIGHT)) < 0)
return ret;
c93->currentpic ^= 1;
if ((ret = ff_reget_buffer(avctx, newpic)) < 0)
return ret;
stride = newpic->linesize[0];
bytestream2_init(&gb, buf, buf_size);
b = bytestream2_get_byte(&gb);
if (b & C93_FIRST_FRAME) {
newpic->pict_type = AV_PICTURE_TYPE_I;
newpic->key_frame = 1;
} else {
newpic->pict_type = AV_PICTURE_TYPE_P;
newpic->key_frame = 0;
}
for (y = 0; y < HEIGHT; y += 8) {
out = newpic->data[0] + y * stride;
for (x = 0; x < WIDTH; x += 8) {
uint8_t *copy_from = oldpic->data[0];
unsigned int offset, j;
uint8_t cols[4], grps[4];
C93BlockType block_type;
if (!bt)
bt = bytestream2_get_byte(&gb);
block_type= bt & 0x0F;
switch (block_type) {
case C93_8X8_FROM_PREV:
offset = bytestream2_get_le16(&gb);
if ((ret = copy_block(avctx, out, copy_from, offset, 8, stride)) < 0)
return ret;
break;
case C93_4X4_FROM_CURR:
copy_from = newpic->data[0];
case C93_4X4_FROM_PREV:
for (j = 0; j < 8; j += 4) {
for (i = 0; i < 8; i += 4) {
int offset = bytestream2_get_le16(&gb);
int from_x = offset % WIDTH;
int from_y = offset / WIDTH;
if (block_type == C93_4X4_FROM_CURR && from_y == y+j &&
(FFABS(from_x - x-i) < 4 || FFABS(from_x - x-i) > WIDTH-4)) {
avpriv_request_sample(avctx, "block overlap %d %d %d %d\n", from_x, x+i, from_y, y+j);
return AVERROR_INVALIDDATA;
}
if ((ret = copy_block(avctx, &out[j*stride+i],
copy_from, offset, 4, stride)) < 0)
return ret;
}
}
break;
case C93_8X8_2COLOR:
bytestream2_get_buffer(&gb, cols, 2);
for (i = 0; i < 8; i++) {
draw_n_color(out + i*stride, stride, 8, 1, 1, cols,
NULL, bytestream2_get_byte(&gb));
}
break;
case C93_4X4_2COLOR:
case C93_4X4_4COLOR:
case C93_4X4_4COLOR_GRP:
for (j = 0; j < 8; j += 4) {
for (i = 0; i < 8; i += 4) {
if (block_type == C93_4X4_2COLOR) {
bytestream2_get_buffer(&gb, cols, 2);
draw_n_color(out + i + j*stride, stride, 4, 4,
1, cols, NULL, bytestream2_get_le16(&gb));
} else if (block_type == C93_4X4_4COLOR) {
bytestream2_get_buffer(&gb, cols, 4);
draw_n_color(out + i + j*stride, stride, 4, 4,
2, cols, NULL, bytestream2_get_le32(&gb));
} else {
bytestream2_get_buffer(&gb, grps, 4);
draw_n_color(out + i + j*stride, stride, 4, 4,
1, cols, grps, bytestream2_get_le16(&gb));
}
}
}
break;
case C93_NOOP:
break;
case C93_8X8_INTRA:
for (j = 0; j < 8; j++)
bytestream2_get_buffer(&gb, out + j*stride, 8);
break;
default:
av_log(avctx, AV_LOG_ERROR, "unexpected type %x at %dx%d\n",
block_type, x, y);
return AVERROR_INVALIDDATA;
}
bt >>= 4;
out += 8;
}
}
if (b & C93_HAS_PALETTE) {
uint32_t *palette = (uint32_t *) newpic->data[1];
for (i = 0; i < 256; i++) {
palette[i] = 0xFFU << 24 | bytestream2_get_be24(&gb);
}
newpic->palette_has_changed = 1;
} else {
if (oldpic->data[1])
memcpy(newpic->data[1], oldpic->data[1], 256 * 4);
}
if ((ret = av_frame_ref(data, newpic)) < 0)
return ret;
*got_frame = 1;
return buf_size;
}
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
{
int size = 0, ret;
const uint8_t *data;
uint32_t flags;
data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
if (!data)
return 0;
if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
"changes, but PARAM_CHANGE side data was sent to it.\n");
ret = AVERROR(EINVAL);
goto fail2;
}
if (size < 4)
goto fail;
flags = bytestream_get_le32(&data);
size -= 4;
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
if (size < 4)
goto fail;
avctx->channels = bytestream_get_le32(&data);
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
if (size < 8)
goto fail;
avctx->channel_layout = bytestream_get_le64(&data);
size -= 8;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
if (size < 4)
goto fail;
avctx->sample_rate = bytestream_get_le32(&data);
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
if (size < 8)
goto fail;
avctx->width = bytestream_get_le32(&data);
avctx->height = bytestream_get_le32(&data);
size -= 8;
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto fail2;
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
ret = AVERROR_INVALIDDATA;
fail2:
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
return ret;
}
return 0;
}
static int ffmal_update_format(AVCodecContext *avctx)
{
MMALDecodeContext *ctx = avctx->priv_data;
MMAL_STATUS_T status;
int ret = 0;
MMAL_COMPONENT_T *decoder = ctx->decoder;
MMAL_ES_FORMAT_T *format_out = decoder->output[0]->format;
MMAL_PARAMETER_VIDEO_INTERLACE_TYPE_T interlace_type;
ffmmal_poolref_unref(ctx->pool_out);
if (!(ctx->pool_out = av_mallocz(sizeof(*ctx->pool_out)))) {
ret = AVERROR(ENOMEM);
goto fail;
}
ctx->pool_out->refcount = 1;
if (!format_out)
goto fail;
if ((status = mmal_port_parameter_set_uint32(decoder->output[0], MMAL_PARAMETER_EXTRA_BUFFERS, ctx->extra_buffers)))
goto fail;
if ((status = mmal_port_parameter_set_boolean(decoder->output[0], MMAL_PARAMETER_VIDEO_INTERPOLATE_TIMESTAMPS, 0)))
goto fail;
if (avctx->pix_fmt == AV_PIX_FMT_MMAL) {
format_out->encoding = MMAL_ENCODING_OPAQUE;
} else {
format_out->encoding_variant = format_out->encoding = MMAL_ENCODING_I420;
}
if ((status = mmal_port_format_commit(decoder->output[0])))
goto fail;
interlace_type.hdr.id = MMAL_PARAMETER_VIDEO_INTERLACE_TYPE;
interlace_type.hdr.size = sizeof(MMAL_PARAMETER_VIDEO_INTERLACE_TYPE_T);
status = mmal_port_parameter_get(decoder->output[0], &interlace_type.hdr);
if (status != MMAL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Cannot read MMAL interlace information!\n");
} else {
ctx->interlaced_frame = (interlace_type.eMode != MMAL_InterlaceProgressive);
ctx->top_field_first = (interlace_type.eMode == MMAL_InterlaceFieldsInterleavedUpperFirst);
}
if ((ret = ff_set_dimensions(avctx, format_out->es->video.crop.x + format_out->es->video.crop.width,
format_out->es->video.crop.y + format_out->es->video.crop.height)) < 0)
goto fail;
if (format_out->es->video.par.num && format_out->es->video.par.den) {
avctx->sample_aspect_ratio.num = format_out->es->video.par.num;
avctx->sample_aspect_ratio.den = format_out->es->video.par.den;
}
if (format_out->es->video.frame_rate.num && format_out->es->video.frame_rate.den) {
avctx->framerate.num = format_out->es->video.frame_rate.num;
avctx->framerate.den = format_out->es->video.frame_rate.den;
}
avctx->colorspace = ffmmal_csp_to_av_csp(format_out->es->video.color_space);
decoder->output[0]->buffer_size =
FFMAX(decoder->output[0]->buffer_size_min, decoder->output[0]->buffer_size_recommended);
decoder->output[0]->buffer_num =
FFMAX(decoder->output[0]->buffer_num_min, decoder->output[0]->buffer_num_recommended) + ctx->extra_buffers;
ctx->pool_out->pool = mmal_pool_create(decoder->output[0]->buffer_num,
decoder->output[0]->buffer_size);
if (!ctx->pool_out->pool) {
ret = AVERROR(ENOMEM);
goto fail;
}
return 0;
fail:
return ret < 0 ? ret : AVERROR_UNKNOWN;
}
static int cdxl_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *pkt)
{
CDXLVideoContext *c = avctx->priv_data;
AVFrame * const p = data;
int ret, w, h, encoding, aligned_width, buf_size = pkt->size;
const uint8_t *buf = pkt->data;
if (buf_size < 32)
return AVERROR_INVALIDDATA;
encoding = buf[1] & 7;
c->format = buf[1] & 0xE0;
w = AV_RB16(&buf[14]);
h = AV_RB16(&buf[16]);
c->bpp = buf[19];
c->palette_size = AV_RB16(&buf[20]);
c->palette = buf + 32;
c->video = c->palette + c->palette_size;
c->video_size = buf_size - c->palette_size - 32;
if (c->palette_size > 512)
return AVERROR_INVALIDDATA;
if (buf_size < c->palette_size + 32)
return AVERROR_INVALIDDATA;
if (c->bpp < 1)
return AVERROR_INVALIDDATA;
if (c->format != BIT_PLANAR && c->format != BIT_LINE) {
avpriv_request_sample(avctx, "Pixel format 0x%0x", c->format);
return AVERROR_PATCHWELCOME;
}
if ((ret = ff_set_dimensions(avctx, w, h)) < 0)
return ret;
aligned_width = FFALIGN(c->avctx->width, 16);
c->padded_bits = aligned_width - c->avctx->width;
if (c->video_size < aligned_width * avctx->height * c->bpp / 8)
return AVERROR_INVALIDDATA;
if (!encoding && c->palette_size && c->bpp <= 8) {
avctx->pix_fmt = AV_PIX_FMT_PAL8;
} else if (encoding == 1 && (c->bpp == 6 || c->bpp == 8)) {
if (c->palette_size != (1 << (c->bpp - 1)))
return AVERROR_INVALIDDATA;
avctx->pix_fmt = AV_PIX_FMT_BGR24;
} else {
avpriv_request_sample(avctx, "Encoding %d and bpp %d",
encoding, c->bpp);
return AVERROR_PATCHWELCOME;
}
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
return ret;
p->pict_type = AV_PICTURE_TYPE_I;
if (encoding) {
av_fast_padded_malloc(&c->new_video, &c->new_video_size,
h * w + FF_INPUT_BUFFER_PADDING_SIZE);
if (!c->new_video)
return AVERROR(ENOMEM);
if (c->bpp == 8)
cdxl_decode_ham8(c, p);
else
cdxl_decode_ham6(c, p);
} else {
cdxl_decode_rgb(c, p);
}
*got_frame = 1;
return buf_size;
}
