diff options
Diffstat (limited to 'libavdevice')
| -rw-r--r-- | libavdevice/v4l2.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c index 867c363533..4b43688089 100644 --- a/libavdevice/v4l2.c +++ b/libavdevice/v4l2.c @@ -150,6 +150,7 @@ static struct fmt_map fmt_conversion_table[] = { { PIX_FMT_NV12, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 }, { PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG }, { PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG }, + { PIX_FMT_NONE, AV_CODEC_ID_CPIA, V4L2_PIX_FMT_CPIA1 }, }; static int device_open(AVFormatContext *ctx) @@ -549,6 +550,13 @@ static int mmap_read_frame(AVFormatContext *ctx, AVPacket *pkt) return AVERROR(errno); } av_assert0(buf.index < s->buffers); + + /* CPIA is a compressed format and we don't know the exact number of bytes + * used by a frame, so set it here as the driver announces it. + */ + if (ctx->video_codec_id == AV_CODEC_ID_CPIA) + s->frame_size = buf.bytesused; + if (s->frame_size > 0 && buf.bytesused != s->frame_size) { av_log(ctx, AV_LOG_ERROR, "The v4l2 frame is %d bytes, but %d bytes are expected\n", @@ -767,7 +775,7 @@ static int v4l2_read_header(AVFormatContext *s1) AVStream *st; int res = 0; uint32_t desired_format; - enum AVCodecID codec_id; + enum AVCodecID codec_id = AV_CODEC_ID_NONE; enum PixelFormat pix_fmt = PIX_FMT_NONE; st = avformat_new_stream(s1, NULL); @@ -828,6 +836,14 @@ static int v4l2_read_header(AVFormatContext *s1) desired_format = device_try_init(s1, pix_fmt, &s->width, &s->height, &codec_id); + + /* If no pixel_format was specified, the codec_id was not known up + * until now. Set video_codec_id in the context, as codec_id will + * not be available outside this function + */ + if (codec_id != AV_CODEC_ID_NONE && s1->video_codec_id == AV_CODEC_ID_NONE) + s1->video_codec_id = codec_id; + if (desired_format == 0) { av_log(s1, AV_LOG_ERROR, "Cannot find a proper format for " "codec_id %d, pix_fmt %d.\n", s1->video_codec_id, pix_fmt); |