On 08/19/2016 04:54 AM, ssshukla26 wrote:
For example let suppose "decoder->dst_data[0]" has YUV buffer and its
alignment is 1.
-----------------------------------------------------------------------------------------------------------------------
//Allocate AVFrame data and linesize
av_image_alloc(avframe->data, avframe->linesize,
decoder->video_resolution.frame_width,
decoder->video_resolution.frame_height,
AV_PIX_FMT_YUV420P, 1);
Below are the 3 methods to fill data array of avframe.
-----------------------------------------------------------------------------------------------------------------------
//1) if your Y, U, V buffers are contiguous and have the correct size, This
is deprecated
avpicture_fill((AVPicture*) avframe, decoder->dst_data[0], avframe->format,
avframe->width, avframe->height);
-----------------------------------------------------------------------------------------------------------------------
//2) if your Y, U, V buffers are non-contiguous, This is deprecated
// Initialize avframe->linesize
avpicture_fill((AVPicture*) avframe, NULL, avframe->format, avframe->width,
avframe->height);
//Set avframe->data pointers manually
avframe->data[0] = decoder->dst_data[0];//Y-Buffer
avframe->data[1] = decoder->dst_data[1];//U-Buffer
avframe->data[2] = decoder->dst_data[2];//V-Buffer
-----------------------------------------------------------------------------------------------------------------------
//3) Fill data array of avframe, as decoder->dst_data[0] alignment is 1 use
the same alignment.
av_image_fill_arrays(avframe->data, avframe->linesize, decoder->dst_data[0],
avframe->format, avframe->width, avframe->height, *1*);
Good explanation.
I figured out #3 yesterday and avoided the deprecated call
m_out_bufers[ m_buf_idx ] = (uint8_t*) av_malloc(
av_image_get_buffer_size( AV_PIX_FMT_RGB24,
m_avcodec_ctx->width,
m_avcodec_ctx->height,
1 ) );
if ( !m_out_bufers[ m_buf_idx ] )[...]
av_image_fill_arrays( m_avframeRGB[ m_buf_idx ]->data,
m_avframeRGB[ m_buf_idx ]->linesize,
m_out_bufers[ m_buf_idx ],
AV_PIX_FMT_RGB24,
m_avcodec_ctx->width,
m_avcodec_ctx->height, 1
);
Can I replace the av_malloc for out_buffers with an input pointer?
size_t required_size = av_image_get_buffer_size( AV_PIX_FMT_RGB24,
m_avcodec_ctx->width, m_avcodec_ctx->height, 1 );
if ( required_size <= in_buff.size ) m_out_bufers[ m_buf_idx ] = in_buff.data;
Thanks
cco
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