void ff_dirac_schro_queue_free (FfmpegDiracSchroQueue *queue,
void (*free_func)(void *))
{
while (queue->p_head) {
free_func( ff_dirac_schro_queue_pop(queue) );
}
}
static int libdirac_encode_frame(AVCodecContext *avccontext,
unsigned char *frame,
int buf_size, void *data)
{
int enc_size = 0;
dirac_encoder_state_t state;
FfmpegDiracEncoderParams* p_dirac_params = avccontext->priv_data;
FfmpegDiracSchroEncodedFrame* p_frame_output = NULL;
FfmpegDiracSchroEncodedFrame* p_next_output_frame = NULL;
int go = 1;
if (data == NULL) {
/* push end of sequence if not already signalled */
if (!p_dirac_params->eos_signalled) {
dirac_encoder_end_sequence( p_dirac_params->p_encoder );
p_dirac_params->eos_signalled = 1;
}
} else {
/* Allocate frame data to Dirac input buffer.
* Input line size may differ from what the codec supports,
* especially when transcoding from one format to another.
* So use avpicture_layout to copy the frame. */
avpicture_layout ((AVPicture *)data, avccontext->pix_fmt,
avccontext->width, avccontext->height,
p_dirac_params->p_in_frame_buf,
p_dirac_params->frame_size);
/* load next frame */
if (dirac_encoder_load (p_dirac_params->p_encoder,
p_dirac_params->p_in_frame_buf,
p_dirac_params->frame_size ) < 0) {
av_log(avccontext, AV_LOG_ERROR, "Unrecoverable Encoder Error."
" dirac_encoder_load failed...\n");
return -1;
}
}
if (p_dirac_params->eos_pulled)
go = 0;
while(go) {
p_dirac_params->p_encoder->enc_buf.buffer = frame;
p_dirac_params->p_encoder->enc_buf.size = buf_size;
/* process frame */
state = dirac_encoder_output ( p_dirac_params->p_encoder );
switch (state)
{
case ENC_STATE_AVAIL:
case ENC_STATE_EOS:
assert (p_dirac_params->p_encoder->enc_buf.size > 0);
/* create output frame */
p_frame_output = av_mallocz(sizeof(FfmpegDiracSchroEncodedFrame));
/* set output data */
p_frame_output->p_encbuf =
av_malloc(p_dirac_params->p_encoder->enc_buf.size);
memcpy(p_frame_output->p_encbuf,
p_dirac_params->p_encoder->enc_buf.buffer,
p_dirac_params->p_encoder->enc_buf.size);
p_frame_output->size = p_dirac_params->p_encoder->enc_buf.size;
p_frame_output->frame_num =
p_dirac_params->p_encoder->enc_pparams.pnum;
if (p_dirac_params->p_encoder->enc_pparams.ptype == INTRA_PICTURE &&
p_dirac_params->p_encoder->enc_pparams.rtype == REFERENCE_PICTURE)
p_frame_output->key_frame = 1;
ff_dirac_schro_queue_push_back (&p_dirac_params->enc_frame_queue,
p_frame_output);
if (state == ENC_STATE_EOS) {
p_dirac_params->eos_pulled = 1;
go = 0;
}
break;
case ENC_STATE_BUFFER:
go = 0;
break;
case ENC_STATE_INVALID:
av_log(avccontext, AV_LOG_ERROR,
"Unrecoverable Dirac Encoder Error. Quitting...\n");
return -1;
default:
av_log(avccontext, AV_LOG_ERROR, "Unknown Dirac Encoder state\n");
return -1;
}
}
/* copy 'next' frame in queue */
p_next_output_frame =
ff_dirac_schro_queue_pop(&p_dirac_params->enc_frame_queue);
if (p_next_output_frame == NULL)
return 0;
memcpy(frame, p_next_output_frame->p_encbuf, p_next_output_frame->size);
avccontext->coded_frame->key_frame = p_next_output_frame->key_frame;
/* Use the frame number of the encoded frame as the pts. It is OK to do
* so since Dirac is a constant framerate codec. It expects input to be
* of constant framerate. */
avccontext->coded_frame->pts = p_next_output_frame->frame_num;
enc_size = p_next_output_frame->size;
/* free frame */
DiracFreeFrame(p_next_output_frame);
return enc_size;
}
static int libschroedinger_decode_frame(AVCodecContext *avccontext,
void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
SchroDecoder *decoder = p_schro_params->decoder;
SchroVideoFormat *format;
AVPicture *picture = data;
SchroBuffer *enc_buf;
SchroFrame* frame;
int state;
int go = 1;
int outer = 1;
FfmpegSchroParseUnitContext parse_ctx;
*data_size = 0;
FfmpegSchroParseContextInit(&parse_ctx, buf, buf_size);
if (!buf_size) {
if (!p_schro_params->eos_signalled) {
state = schro_decoder_push_end_of_stream(decoder);
p_schro_params->eos_signalled = 1;
}
}
/* Loop through all the individual parse units in the input buffer */
do {
if ((enc_buf = FfmpegFindNextSchroParseUnit(&parse_ctx))) {
/* Push buffer into decoder. */
if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
avccontext->has_b_frames = 1;
state = schro_decoder_push(decoder, enc_buf);
if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
libschroedinger_handle_first_access_unit(avccontext);
go = 1;
} else
outer = 0;
format = p_schro_params->format;
while (go) {
/* Parse data and process result. */
state = schro_decoder_wait(decoder);
switch (state) {
case SCHRO_DECODER_FIRST_ACCESS_UNIT:
libschroedinger_handle_first_access_unit(avccontext);
break;
case SCHRO_DECODER_NEED_BITS:
/* Need more input data - stop iterating over what we have. */
go = 0;
break;
case SCHRO_DECODER_NEED_FRAME:
/* Decoder needs a frame - create one and push it in. */
frame = ff_create_schro_frame(avccontext,
p_schro_params->frame_format);
schro_decoder_add_output_picture(decoder, frame);
break;
case SCHRO_DECODER_OK:
/* Pull a frame out of the decoder. */
frame = schro_decoder_pull(decoder);
if (frame)
ff_dirac_schro_queue_push_back(&p_schro_params->dec_frame_queue,
frame);
break;
case SCHRO_DECODER_EOS:
go = 0;
p_schro_params->eos_pulled = 1;
schro_decoder_reset(decoder);
outer = 0;
break;
case SCHRO_DECODER_ERROR:
return -1;
break;
}
}
} while (outer);
/* Grab next frame to be returned from the top of the queue. */
frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);
if (frame) {
memcpy(p_schro_params->dec_pic.data[0],
frame->components[0].data,
frame->components[0].length);
memcpy(p_schro_params->dec_pic.data[1],
frame->components[1].data,
frame->components[1].length);
memcpy(p_schro_params->dec_pic.data[2],
frame->components[2].data,
frame->components[2].length);
/* Fill picture with current buffer data from Schroedinger. */
avpicture_fill(picture, p_schro_params->dec_pic.data[0],
avccontext->pix_fmt,
avccontext->width, avccontext->height);
*data_size = sizeof(AVPicture);
/* Now free the frame resources. */
libschroedinger_decode_frame_free(frame);
}
return buf_size;
}
static int libschroedinger_encode_frame(AVCodecContext *avccontext,
unsigned char *frame,
int buf_size, void *data)
{
int enc_size = 0;
FfmpegSchroEncoderParams* p_schro_params = avccontext->priv_data;
SchroEncoder *encoder = p_schro_params->encoder;
struct FfmpegDiracSchroEncodedFrame* p_frame_output = NULL;
int go = 1;
SchroBuffer *enc_buf;
int presentation_frame;
int parse_code;
int last_frame_in_sequence = 0;
if (!data) {
/* Push end of sequence if not already signalled. */
if (!p_schro_params->eos_signalled) {
schro_encoder_end_of_stream(encoder);
p_schro_params->eos_signalled = 1;
}
} else {
/* Allocate frame data to schro input buffer. */
SchroFrame *in_frame = libschroedinger_frame_from_data(avccontext,
data);
/* Load next frame. */
schro_encoder_push_frame(encoder, in_frame);
}
if (p_schro_params->eos_pulled)
go = 0;
/* Now check to see if we have any output from the encoder. */
while (go) {
SchroStateEnum state;
state = schro_encoder_wait(encoder);
switch (state) {
case SCHRO_STATE_HAVE_BUFFER:
case SCHRO_STATE_END_OF_STREAM:
enc_buf = schro_encoder_pull(encoder, &presentation_frame);
assert(enc_buf->length > 0);
assert(enc_buf->length <= buf_size);
parse_code = enc_buf->data[4];
/* All non-frame data is prepended to actual frame data to
* be able to set the pts correctly. So we don't write data
* to the frame output queue until we actually have a frame
*/
p_schro_params->enc_buf = av_realloc(p_schro_params->enc_buf,
p_schro_params->enc_buf_size + enc_buf->length);
memcpy(p_schro_params->enc_buf + p_schro_params->enc_buf_size,
enc_buf->data, enc_buf->length);
p_schro_params->enc_buf_size += enc_buf->length;
if (state == SCHRO_STATE_END_OF_STREAM) {
p_schro_params->eos_pulled = 1;
go = 0;
}
if (!SCHRO_PARSE_CODE_IS_PICTURE(parse_code)) {
schro_buffer_unref(enc_buf);
break;
}
/* Create output frame. */
p_frame_output = av_mallocz(sizeof(FfmpegDiracSchroEncodedFrame));
/* Set output data. */
p_frame_output->size = p_schro_params->enc_buf_size;
p_frame_output->p_encbuf = p_schro_params->enc_buf;
if (SCHRO_PARSE_CODE_IS_INTRA(parse_code) &&
SCHRO_PARSE_CODE_IS_REFERENCE(parse_code))
p_frame_output->key_frame = 1;
/* Parse the coded frame number from the bitstream. Bytes 14
* through 17 represesent the frame number. */
p_frame_output->frame_num = AV_RB32(enc_buf->data + 13);
ff_dirac_schro_queue_push_back(&p_schro_params->enc_frame_queue,
p_frame_output);
p_schro_params->enc_buf_size = 0;
p_schro_params->enc_buf = NULL;
schro_buffer_unref(enc_buf);
break;
case SCHRO_STATE_NEED_FRAME:
go = 0;
break;
case SCHRO_STATE_AGAIN:
break;
default:
av_log(avccontext, AV_LOG_ERROR, "Unknown Schro Encoder state\n");
return -1;
}
}
/* Copy 'next' frame in queue. */
if (p_schro_params->enc_frame_queue.size == 1 &&
p_schro_params->eos_pulled)
last_frame_in_sequence = 1;
p_frame_output = ff_dirac_schro_queue_pop(&p_schro_params->enc_frame_queue);
if (!p_frame_output)
return 0;
memcpy(frame, p_frame_output->p_encbuf, p_frame_output->size);
avccontext->coded_frame->key_frame = p_frame_output->key_frame;
/* Use the frame number of the encoded frame as the pts. It is OK to
* do so since Dirac is a constant frame rate codec. It expects input
* to be of constant frame rate. */
avccontext->coded_frame->pts = p_frame_output->frame_num;
enc_size = p_frame_output->size;
/* Append the end of sequence information to the last frame in the
* sequence. */
if (last_frame_in_sequence && p_schro_params->enc_buf_size > 0) {
memcpy(frame + enc_size, p_schro_params->enc_buf,
p_schro_params->enc_buf_size);
enc_size += p_schro_params->enc_buf_size;
av_freep(&p_schro_params->enc_buf);
p_schro_params->enc_buf_size = 0;
}
/* free frame */
SchroedingerFreeFrame(p_frame_output);
return enc_size;
}
static int libschroedinger_decode_frame(AVCodecContext *avccontext,
void *data, int *data_size,
const uint8_t *buf, int buf_size)
{
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
SchroDecoder *decoder = p_schro_params->decoder;
SchroVideoFormat *format;
AVPicture *picture = data;
SchroBuffer *enc_buf;
SchroFrame* frame;
int state;
int go = 1;
*data_size = 0;
if (buf_size>0) {
unsigned char *in_buf = av_malloc(buf_size);
memcpy (in_buf, buf, buf_size);
enc_buf = schro_buffer_new_with_data (in_buf, buf_size);
enc_buf->free = libschroedinger_decode_buffer_free;
enc_buf->priv = in_buf;
/* Push buffer into decoder. */
state = schro_decoder_push (decoder, enc_buf);
if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
libschroedinger_handle_first_access_unit(avccontext);
} else {
if (!p_schro_params->eos_signalled) {
state = schro_decoder_push_end_of_stream(decoder);
p_schro_params->eos_signalled = 1;
}
}
format = p_schro_params->format;
while (go) {
/* Parse data and process result. */
state = schro_decoder_wait (decoder);
switch (state)
{
case SCHRO_DECODER_FIRST_ACCESS_UNIT:
libschroedinger_handle_first_access_unit (avccontext);
break;
case SCHRO_DECODER_NEED_BITS:
/* Need more input data - stop iterating over what we have. */
go = 0;
break;
case SCHRO_DECODER_NEED_FRAME:
/* Decoder needs a frame - create one and push it in. */
frame = schro_frame_new_and_alloc(NULL,
p_schro_params->frame_format,
format->width,
format->height);
schro_decoder_add_output_picture (decoder, frame);
break;
case SCHRO_DECODER_OK:
/* Pull a frame out of the decoder. */
frame = schro_decoder_pull (decoder);
if (frame) {
ff_dirac_schro_queue_push_back(
&p_schro_params->dec_frame_queue,
frame);
}
break;
case SCHRO_DECODER_EOS:
go = 0;
p_schro_params->eos_pulled = 1;
schro_decoder_reset (decoder);
break;
case SCHRO_DECODER_ERROR:
return -1;
break;
}
}
/* Grab next frame to be returned from the top of the queue. */
frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);
if (frame != NULL) {
memcpy (p_schro_params->dec_pic.data[0],
frame->components[0].data,
frame->components[0].length);
memcpy (p_schro_params->dec_pic.data[1],
frame->components[1].data,
frame->components[1].length);
memcpy (p_schro_params->dec_pic.data[2],
frame->components[2].data,
frame->components[2].length);
/* Fill picture with current buffer data from Schroedinger. */
avpicture_fill(picture, p_schro_params->dec_pic.data[0],
avccontext->pix_fmt,
avccontext->width, avccontext->height);
*data_size = sizeof(AVPicture);
/* Now free the frame resources. */
libschroedinger_decode_frame_free (frame);
}
return buf_size;
}
