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Make some more use of the ffmpeg utils.c functions for buffer allocation (really handy)

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Original commit message from CVS:
Make some more use of the ffmpeg utils.c functions for buffer allocation (really handy)
This commit is contained in:
Ronald S. Bultje 2003-06-07 20:45:13 +00:00
parent 2cc34e4c8f
commit b17e56216c
1 changed files with 28 additions and 93 deletions
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121
ext/ffmpeg/gstffmpegdec.c
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@ -189,25 +189,9 @@ gst_ffmpegdec_connect (GstPad *pad,
ffmpegdec->context->get_buffer = gst_ffmpegdec_get_buffer;
ffmpegdec->context->release_buffer = gst_ffmpegdec_release_buffer;
switch (oclass->in_plugin->type) {
case CODEC_TYPE_VIDEO:
/* get size */
if (gst_caps_has_property_typed (caps, "width", GST_PROPS_INT_TYPE))
gst_caps_get_int (caps, "width", &ffmpegdec->context->width);
if (gst_caps_has_property_typed (caps, "height", GST_PROPS_INT_TYPE))
gst_caps_get_int (caps, "height", &ffmpegdec->context->height);
break;
case CODEC_TYPE_AUDIO:
/* FIXME: does ffmpeg want us to set the sample format
* and the rate+channels here? Or does it provide them
* itself? */
break;
default:
/* Unsupported */
return GST_PAD_LINK_REFUSED;
}
/* get size and so */
gst_ffmpeg_caps_to_codectype (oclass->in_plugin->type,
caps, ffmpegdec->context);
/* we dont send complete frames */
if (oclass->in_plugin->capabilities & CODEC_CAP_TRUNCATED)
@ -232,90 +216,30 @@ gst_ffmpegdec_connect (GstPad *pad,
return GST_PAD_LINK_OK;
}
/* innocent hacks */
#define ALIGN(x) (((x)+alignment)&~alignment)
static int
gst_ffmpegdec_get_buffer (AVCodecContext *context,
AVFrame *picture)
{
GstBuffer *buf = NULL;
gint hor_chr_dec = -1, ver_chr_dec = -1;
gint width, height;
gint alignment;
gulong bufsize = 0;
/* set alignment */
if (context->codec_id == CODEC_ID_SVQ1) {
alignment = 63;
} else {
alignment = 15;
}
/* set start size */
width = ALIGN (context->width);
height = ALIGN (context->height);
switch (context->codec_type) {
case CODEC_TYPE_VIDEO:
bufsize = avpicture_get_size (context->pix_fmt,
width, height);
/* find out whether we are planar or packed */
switch (context->pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
avcodec_get_chroma_sub_sample (context->pix_fmt,
&hor_chr_dec, &ver_chr_dec);
break;
case PIX_FMT_YUV422:
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
case PIX_FMT_RGBA32:
case PIX_FMT_RGB565:
case PIX_FMT_RGB555:
/* not planar */
break;
default:
g_assert (0);
break;
}
context->width,
context->height);
buf = gst_buffer_new_and_alloc (bufsize);
avpicture_fill ((AVPicture *) picture, GST_BUFFER_DATA (buf),
context->pix_fmt,
context->width, context->height);
break;
case CODEC_TYPE_AUDIO:
bufsize = AVCODEC_MAX_AUDIO_FRAME_SIZE;
break;
default:
g_assert (0);
break;
}
/* create buffer */
buf = gst_buffer_new_and_alloc (bufsize);
/* set up planes */
picture->data[0] = GST_BUFFER_DATA (buf);
if (hor_chr_dec >= 0 && ver_chr_dec >= 0) {
picture->linesize[0] = width;
picture->linesize[1] = width >> hor_chr_dec;
picture->linesize[2] = width >> hor_chr_dec;
picture->data[1] = picture->data[0] + (width * height);
picture->data[2] = picture->data[1] +
((width * height) >> (ver_chr_dec + hor_chr_dec));
} else {
picture->linesize[0] = GST_BUFFER_MAXSIZE (buf) / height;
picture->linesize[1] = picture->linesize[2] = 0;
picture->data[1] = picture->data[2] = NULL;
}
picture->linesize[3] = 0;
picture->data[3] = NULL;
/* tell ffmpeg we own this buffer
*
* we also use an evil hack (keep buffer in base[0])
@ -343,14 +267,13 @@ gst_ffmpegdec_release_buffer (AVCodecContext *context,
picture->data[i] = NULL;
picture->linesize[i] = 0;
}
picture->base[0] = NULL;
}
static void
gst_ffmpegdec_chain (GstPad *pad,
GstBuffer *inbuf)
{
GstBuffer *outbuf;
GstBuffer *outbuf = NULL;
GstFFMpegDec *ffmpegdec = (GstFFMpegDec *)(gst_pad_get_parent (pad));
GstFFMpegDecClass *oclass = (GstFFMpegDecClass*)(G_OBJECT_GET_CLASS (ffmpegdec));
guchar *data;
@ -374,12 +297,28 @@ gst_ffmpegdec_chain (GstPad *pad,
ffmpegdec->picture,
&have_data,
data, size);
if (have_data) {
outbuf = GST_BUFFER (ffmpegdec->picture->base[0]);
GST_BUFFER_SIZE (outbuf) = GST_BUFFER_MAXSIZE (outbuf);
/* this isn't necessarily true, but it's better than nothing */
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
}
break;
case CODEC_TYPE_AUDIO:
outbuf = gst_buffer_new_and_alloc (AVCODEC_MAX_AUDIO_FRAME_SIZE);
len = avcodec_decode_audio (ffmpegdec->context,
(int16_t *) ffmpegdec->picture->data[0],
(int16_t *) GST_BUFFER_DATA (outbuf),
&have_data,
data, size);
if (have_data) {
GST_BUFFER_SIZE (outbuf) = have_data;
GST_BUFFER_DURATION (outbuf) = (have_data * GST_SECOND) /
(ffmpegdec->context->channels *
ffmpegdec->context->sample_rate);
} else {
gst_buffer_unref (outbuf);
}
break;
default:
g_assert(0);
@ -406,12 +345,8 @@ gst_ffmpegdec_chain (GstPad *pad,
}
}
outbuf = GST_BUFFER (ffmpegdec->picture->base[0]);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
if (oclass->in_plugin->type == CODEC_TYPE_AUDIO)
GST_BUFFER_SIZE (outbuf) = have_data;
else
GST_BUFFER_SIZE (outbuf) = GST_BUFFER_MAXSIZE (outbuf);
gst_pad_push (ffmpegdec->srcpad, outbuf);
}