/* [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 CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* format)
{
AVCodecContext *avctx = opaque;
CuvidContext *ctx = avctx->priv_data;
AVHWFramesContext *hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;
CUVIDDECODECREATEINFO cuinfo;
av_log(avctx, AV_LOG_TRACE, "pfnSequenceCallback, progressive_sequence=%d\n", format->progressive_sequence);
ctx->internal_error = 0;
avctx->width = format->display_area.right;
avctx->height = format->display_area.bottom;
ff_set_sar(avctx, av_div_q(
(AVRational){ format->display_aspect_ratio.x, format->display_aspect_ratio.y },
(AVRational){ avctx->width, avctx->height }));
if (!format->progressive_sequence && ctx->deint_mode == cudaVideoDeinterlaceMode_Weave)
avctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
else
avctx->flags &= ~AV_CODEC_FLAG_INTERLACED_DCT;
if (format->video_signal_description.video_full_range_flag)
avctx->color_range = AVCOL_RANGE_JPEG;
else
avctx->color_range = AVCOL_RANGE_MPEG;
avctx->color_primaries = format->video_signal_description.color_primaries;
avctx->color_trc = format->video_signal_description.transfer_characteristics;
avctx->colorspace = format->video_signal_description.matrix_coefficients;
if (format->bitrate)
avctx->bit_rate = format->bitrate;
if (format->frame_rate.numerator && format->frame_rate.denominator) {
avctx->framerate.num = format->frame_rate.numerator;
avctx->framerate.den = format->frame_rate.denominator;
}
if (ctx->cudecoder
&& avctx->coded_width == format->coded_width
&& avctx->coded_height == format->coded_height
&& ctx->chroma_format == format->chroma_format
&& ctx->codec_type == format->codec)
return 1;
if (ctx->cudecoder) {
av_log(avctx, AV_LOG_TRACE, "Re-initializing decoder\n");
ctx->internal_error = CHECK_CU(cuvidDestroyDecoder(ctx->cudecoder));
if (ctx->internal_error < 0)
return 0;
ctx->cudecoder = NULL;
}
if (hwframe_ctx->pool && (
hwframe_ctx->width < avctx->width ||
hwframe_ctx->height < avctx->height ||
hwframe_ctx->format != AV_PIX_FMT_CUDA ||
hwframe_ctx->sw_format != AV_PIX_FMT_NV12)) {
av_log(avctx, AV_LOG_ERROR, "AVHWFramesContext is already initialized with incompatible parameters\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
if (format->chroma_format != cudaVideoChromaFormat_420) {
av_log(avctx, AV_LOG_ERROR, "Chroma formats other than 420 are not supported\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
avctx->coded_width = format->coded_width;
avctx->coded_height = format->coded_height;
ctx->chroma_format = format->chroma_format;
memset(&cuinfo, 0, sizeof(cuinfo));
cuinfo.CodecType = ctx->codec_type = format->codec;
cuinfo.ChromaFormat = format->chroma_format;
cuinfo.OutputFormat = cudaVideoSurfaceFormat_NV12;
cuinfo.ulWidth = avctx->coded_width;
cuinfo.ulHeight = avctx->coded_height;
cuinfo.ulTargetWidth = cuinfo.ulWidth;
cuinfo.ulTargetHeight = cuinfo.ulHeight;
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulWidth;
cuinfo.target_rect.bottom = cuinfo.ulHeight;
cuinfo.ulNumDecodeSurfaces = MAX_FRAME_COUNT;
cuinfo.ulNumOutputSurfaces = 1;
cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;
cuinfo.bitDepthMinus8 = format->bit_depth_luma_minus8;
if (format->progressive_sequence) {
ctx->deint_mode = cuinfo.DeinterlaceMode = cudaVideoDeinterlaceMode_Weave;
} else {
cuinfo.DeinterlaceMode = ctx->deint_mode;
}
if (ctx->deint_mode != cudaVideoDeinterlaceMode_Weave)
avctx->framerate = av_mul_q(avctx->framerate, (AVRational){2, 1});
ctx->internal_error = CHECK_CU(cuvidCreateDecoder(&ctx->cudecoder, &cuinfo));
if (ctx->internal_error < 0)
return 0;
if (!hwframe_ctx->pool) {
hwframe_ctx->format = AV_PIX_FMT_CUDA;
hwframe_ctx->sw_format = AV_PIX_FMT_NV12;
hwframe_ctx->width = avctx->width;
hwframe_ctx->height = avctx->height;
if ((ctx->internal_error = av_hwframe_ctx_init(ctx->hwframe)) < 0) {
av_log(avctx, AV_LOG_ERROR, "av_hwframe_ctx_init failed\n");
return 0;
}
}
return 1;
}
/* 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)
{
av_log(s->avctx, AV_LOG_ERROR, "invalid header size (%d)\n", s->buf[0]);
return AVERROR_INVALIDDATA;
}
if (header.header_size + 1 > s->size) {
av_log(s->avctx, AV_LOG_ERROR, "Input packet too small.\n");
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;
ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio);
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 mediacodec_dec_parse_format(AVCodecContext *avctx, MediaCodecDecContext *s)
{
int ret = 0;
int width = 0;
int height = 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);
/* Mandatory fields */
AMEDIAFORMAT_GET_INT32(s->width, "width", 1);
AMEDIAFORMAT_GET_INT32(s->height, "height", 1);
AMEDIAFORMAT_GET_INT32(s->stride, "stride", 1);
s->stride = s->stride > 0 ? s->stride : s->width;
AMEDIAFORMAT_GET_INT32(s->slice_height, "slice-height", 1);
s->slice_height = s->slice_height > 0 ? s->slice_height : 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;
}
AMEDIAFORMAT_GET_INT32(s->color_format, "color-format", 1);
avctx->pix_fmt = mcdec_map_color_format(avctx, s, s->color_format);
if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
av_log(avctx, AV_LOG_ERROR, "Output color format is not supported\n");
ret = AVERROR(EINVAL);
goto fail;
}
/* Optional fields */
AMEDIAFORMAT_GET_INT32(s->crop_top, "crop-top", 0);
AMEDIAFORMAT_GET_INT32(s->crop_bottom, "crop-bottom", 0);
AMEDIAFORMAT_GET_INT32(s->crop_left, "crop-left", 0);
AMEDIAFORMAT_GET_INT32(s->crop_right, "crop-right", 0);
width = s->crop_right + 1 - s->crop_left;
height = s->crop_bottom + 1 - s->crop_top;
AMEDIAFORMAT_GET_INT32(s->display_width, "display-width", 0);
AMEDIAFORMAT_GET_INT32(s->display_height, "display-height", 0);
if (s->display_width && s->display_height) {
AVRational sar = av_div_q(
(AVRational){ s->display_width, s->display_height },
(AVRational){ width, height });
ff_set_sar(avctx, sar);
}
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);
av_freep(&format);
return ff_set_dimensions(avctx, width, height);
fail:
av_freep(&format);
return ret;
}
static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* format)
{
AVCodecContext *avctx = opaque;
CuvidContext *ctx = avctx->priv_data;
AVHWFramesContext *hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;
CUVIDDECODECAPS *caps = NULL;
CUVIDDECODECREATEINFO cuinfo;
int surface_fmt;
int old_width = avctx->width;
int old_height = avctx->height;
enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_CUDA,
AV_PIX_FMT_NONE, // Will be updated below
AV_PIX_FMT_NONE };
av_log(avctx, AV_LOG_TRACE, "pfnSequenceCallback, progressive_sequence=%d\n", format->progressive_sequence);
memset(&cuinfo, 0, sizeof(cuinfo));
ctx->internal_error = 0;
avctx->coded_width = cuinfo.ulWidth = format->coded_width;
avctx->coded_height = cuinfo.ulHeight = format->coded_height;
// apply cropping
cuinfo.display_area.left = format->display_area.left + ctx->crop.left;
cuinfo.display_area.top = format->display_area.top + ctx->crop.top;
cuinfo.display_area.right = format->display_area.right - ctx->crop.right;
cuinfo.display_area.bottom = format->display_area.bottom - ctx->crop.bottom;
// width and height need to be set before calling ff_get_format
if (ctx->resize_expr) {
avctx->width = ctx->resize.width;
avctx->height = ctx->resize.height;
} else {
avctx->width = cuinfo.display_area.right - cuinfo.display_area.left;
avctx->height = cuinfo.display_area.bottom - cuinfo.display_area.top;
}
// target width/height need to be multiples of two
cuinfo.ulTargetWidth = avctx->width = (avctx->width + 1) & ~1;
cuinfo.ulTargetHeight = avctx->height = (avctx->height + 1) & ~1;
// aspect ratio conversion, 1:1, depends on scaled resolution
cuinfo.target_rect.left = 0;
cuinfo.target_rect.top = 0;
cuinfo.target_rect.right = cuinfo.ulTargetWidth;
cuinfo.target_rect.bottom = cuinfo.ulTargetHeight;
switch (format->bit_depth_luma_minus8) {
case 0: // 8-bit
pix_fmts[1] = AV_PIX_FMT_NV12;
caps = &ctx->caps8;
break;
case 2: // 10-bit
pix_fmts[1] = AV_PIX_FMT_P010;
caps = &ctx->caps10;
break;
case 4: // 12-bit
pix_fmts[1] = AV_PIX_FMT_P016;
caps = &ctx->caps12;
break;
default:
break;
}
if (!caps || !caps->bIsSupported) {
av_log(avctx, AV_LOG_ERROR, "unsupported bit depth: %d\n",
format->bit_depth_luma_minus8 + 8);
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
surface_fmt = ff_get_format(avctx, pix_fmts);
if (surface_fmt < 0) {
av_log(avctx, AV_LOG_ERROR, "ff_get_format failed: %d\n", surface_fmt);
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
av_log(avctx, AV_LOG_VERBOSE, "Formats: Original: %s | HW: %s | SW: %s\n",
av_get_pix_fmt_name(avctx->pix_fmt),
av_get_pix_fmt_name(surface_fmt),
av_get_pix_fmt_name(avctx->sw_pix_fmt));
avctx->pix_fmt = surface_fmt;
// Update our hwframe ctx, as the get_format callback might have refreshed it!
if (avctx->hw_frames_ctx) {
av_buffer_unref(&ctx->hwframe);
ctx->hwframe = av_buffer_ref(avctx->hw_frames_ctx);
if (!ctx->hwframe) {
ctx->internal_error = AVERROR(ENOMEM);
return 0;
}
hwframe_ctx = (AVHWFramesContext*)ctx->hwframe->data;
}
ff_set_sar(avctx, av_div_q(
(AVRational){ format->display_aspect_ratio.x, format->display_aspect_ratio.y },
(AVRational){ avctx->width, avctx->height }));
ctx->deint_mode_current = format->progressive_sequence
? cudaVideoDeinterlaceMode_Weave
: ctx->deint_mode;
if (!format->progressive_sequence && ctx->deint_mode_current == cudaVideoDeinterlaceMode_Weave)
avctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
else
avctx->flags &= ~AV_CODEC_FLAG_INTERLACED_DCT;
if (format->video_signal_description.video_full_range_flag)
avctx->color_range = AVCOL_RANGE_JPEG;
else
avctx->color_range = AVCOL_RANGE_MPEG;
avctx->color_primaries = format->video_signal_description.color_primaries;
avctx->color_trc = format->video_signal_description.transfer_characteristics;
avctx->colorspace = format->video_signal_description.matrix_coefficients;
if (format->bitrate)
avctx->bit_rate = format->bitrate;
if (format->frame_rate.numerator && format->frame_rate.denominator) {
avctx->framerate.num = format->frame_rate.numerator;
avctx->framerate.den = format->frame_rate.denominator;
}
if (ctx->cudecoder
&& avctx->coded_width == format->coded_width
&& avctx->coded_height == format->coded_height
&& avctx->width == old_width
&& avctx->height == old_height
&& ctx->chroma_format == format->chroma_format
&& ctx->codec_type == format->codec)
return 1;
if (ctx->cudecoder) {
av_log(avctx, AV_LOG_TRACE, "Re-initializing decoder\n");
ctx->internal_error = CHECK_CU(ctx->cvdl->cuvidDestroyDecoder(ctx->cudecoder));
if (ctx->internal_error < 0)
return 0;
ctx->cudecoder = NULL;
}
if (hwframe_ctx->pool && (
hwframe_ctx->width < avctx->width ||
hwframe_ctx->height < avctx->height ||
hwframe_ctx->format != AV_PIX_FMT_CUDA ||
hwframe_ctx->sw_format != avctx->sw_pix_fmt)) {
av_log(avctx, AV_LOG_ERROR, "AVHWFramesContext is already initialized with incompatible parameters\n");
av_log(avctx, AV_LOG_DEBUG, "width: %d <-> %d\n", hwframe_ctx->width, avctx->width);
av_log(avctx, AV_LOG_DEBUG, "height: %d <-> %d\n", hwframe_ctx->height, avctx->height);
av_log(avctx, AV_LOG_DEBUG, "format: %s <-> cuda\n", av_get_pix_fmt_name(hwframe_ctx->format));
av_log(avctx, AV_LOG_DEBUG, "sw_format: %s <-> %s\n",
av_get_pix_fmt_name(hwframe_ctx->sw_format), av_get_pix_fmt_name(avctx->sw_pix_fmt));
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
if (format->chroma_format != cudaVideoChromaFormat_420) {
av_log(avctx, AV_LOG_ERROR, "Chroma formats other than 420 are not supported\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
ctx->chroma_format = format->chroma_format;
cuinfo.CodecType = ctx->codec_type = format->codec;
cuinfo.ChromaFormat = format->chroma_format;
switch (avctx->sw_pix_fmt) {
case AV_PIX_FMT_NV12:
cuinfo.OutputFormat = cudaVideoSurfaceFormat_NV12;
break;
case AV_PIX_FMT_P010:
case AV_PIX_FMT_P016:
cuinfo.OutputFormat = cudaVideoSurfaceFormat_P016;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Output formats other than NV12, P010 or P016 are not supported\n");
ctx->internal_error = AVERROR(EINVAL);
return 0;
}
cuinfo.ulNumDecodeSurfaces = ctx->nb_surfaces;
cuinfo.ulNumOutputSurfaces = 1;
cuinfo.ulCreationFlags = cudaVideoCreate_PreferCUVID;
cuinfo.bitDepthMinus8 = format->bit_depth_luma_minus8;
cuinfo.DeinterlaceMode = ctx->deint_mode_current;
if (ctx->deint_mode_current != cudaVideoDeinterlaceMode_Weave && !ctx->drop_second_field)
avctx->framerate = av_mul_q(avctx->framerate, (AVRational){2, 1});
ctx->internal_error = CHECK_CU(ctx->cvdl->cuvidCreateDecoder(&ctx->cudecoder, &cuinfo));
if (ctx->internal_error < 0)
return 0;
if (!hwframe_ctx->pool) {
hwframe_ctx->format = AV_PIX_FMT_CUDA;
hwframe_ctx->sw_format = avctx->sw_pix_fmt;
hwframe_ctx->width = avctx->width;
hwframe_ctx->height = avctx->height;
if ((ctx->internal_error = av_hwframe_ctx_init(ctx->hwframe)) < 0) {
av_log(avctx, AV_LOG_ERROR, "av_hwframe_ctx_init failed\n");
return 0;
}
}
return 1;
}